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31300033340 = 2257173301949
BaseRepresentation
bin11101001001101000…
…001001101100111100
32222210100112102212002
4131021220021230330
51003100302031330
622213512201432
72155433615342
oct351150115474
988710472762
1031300033340
1112302064354
126096399278
132c4a8122b4
14172cd77992
15c32d23e45
hex749a09b3c

31300033340 has 48 divisors (see below), whose sum is σ = 67569163200. Its totient is φ = 12174543360.

The previous prime is 31300033313. The next prime is 31300033367. The reversal of 31300033340 is 4333000313.

It is an interprime number because it is at equal distance from previous prime (31300033313) and next prime (31300033367).

It is a super-2 number, since 2×313000333402 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47315 + ... + 254634.

It is an arithmetic number, because the mean of its divisors is an integer number (1407690900).

Almost surely, 231300033340 is an apocalyptic number.

It is an amenable number.

31300033340 is an abundant number, since it is smaller than the sum of its proper divisors (36269129860).

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

31300033340 is a wasteful number, since it uses less digits than its factorization.

31300033340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302102 (or 302100 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 31300033340 its reverse (4333000313), we get a palindrome (35633033653).

The spelling of 31300033340 in words is "thirty-one billion, three hundred million, thirty-three thousand, three hundred forty".

Divisors: 1 2 4 5 10 20 71 73 142 146 284 292 355 365 710 730 1420 1460 5183 10366 20732 25915 51830 103660 301949 603898 1207796 1509745 3019490 6038980 21438379 22042277 42876758 44084554 85753516 88169108 107191895 110211385 214383790 220422770 428767580 440845540 1565001667 3130003334 6260006668 7825008335 15650016670 31300033340