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2315430134540 = 2251755603122477
BaseRepresentation
bin100001101100011010011…
…001000000001100001100
322012100112022021221001122
4201230122121000030030
5300414000103301130
64531405515300112
7326166342260405
oct41543231001414
98170468257048
102315430134540
11812a71a47596
123148b4a4a638
1313a4620718b3
14800d2dc29ac
154036a1182e5
hex21b1a64030c

2315430134540 has 48 divisors (see below), whose sum is σ = 5148561634272. Its totient is φ = 871668550656.

The previous prime is 2315430134483. The next prime is 2315430134569. The reversal of 2315430134540 is 454310345132.

It is a super-2 number, since 2×23154301345402 (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2315430134540.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18843782 + ... + 18966258.

It is an arithmetic number, because the mean of its divisors is an integer number (107261700714).

Almost surely, 22315430134540 is an apocalyptic number.

2315430134540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2315430134540 is an abundant number, since it is smaller than the sum of its proper divisors (2833131499732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2315430134540 is a wasteful number, since it uses less digits than its factorization.

2315430134540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178106 (or 178104 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 2315430134540 its reverse (454310345132), we get a palindrome (2769740479672).

The spelling of 2315430134540 in words is "two trillion, three hundred fifteen billion, four hundred thirty million, one hundred thirty-four thousand, five hundred forty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 55603 111206 122477 222412 244954 278015 489908 556030 612385 945251 1112060 1224770 1890502 2082109 2449540 3781004 4164218 4726255 8328436 9452510 10410545 18905020 20821090 41642180 6810088631 13620177262 27240354524 34050443155 68100886310 115771506727 136201772620 231543013454 463086026908 578857533635 1157715067270 2315430134540