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2315240031 = 31359365129
BaseRepresentation
bin1000100111111111…
…1100001001011111
312222100112101020210
42021333330021133
514220200140111
61021423343503
7111242133636
oct21177741137
95870471223
102315240031
11a88990115
12547451b93
132ab87cb20
1417d6b851d
15d83d20a6
hex89ffc25f

2315240031 has 8 divisors (see below), whose sum is σ = 3324447280. Its totient is φ = 1424763072.

The previous prime is 2315240023. The next prime is 2315240033. The reversal of 2315240031 is 1300425132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2315240031 - 23 = 2315240023 is a prime.

It is a super-2 number, since 2×23152400312 = 10720672802289761922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2315240033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29682526 + ... + 29682603.

It is an arithmetic number, because the mean of its divisors is an integer number (415555910).

Almost surely, 22315240031 is an apocalyptic number.

2315240031 is a deficient number, since it is larger than the sum of its proper divisors (1009207249).

2315240031 is a wasteful number, since it uses less digits than its factorization.

2315240031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59365145.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2315240031 is about 48116.9412057749. The cubic root of 2315240031 is about 1322.9152036487.

Adding to 2315240031 its reverse (1300425132), we get a palindrome (3615665163).

The spelling of 2315240031 in words is "two billion, three hundred fifteen million, two hundred forty thousand, thirty-one".

Divisors: 1 3 13 39 59365129 178095387 771746677 2315240031