115071931 has 12 divisors (see below), whose sum is σ = 125025600. Its totient is φ = 105861600.

The previous prime is 115071919. The next prime is 115071937. The reversal of 115071931 is 139170511.

It is not a de Polignac number, because 115071931 - 2²³ = 106683323 is a prime.

It is a super-2 number, since 2×115071931² = 26483098608137522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115071931.

It is not an unprimeable number, because it can be changed into a prime (115071937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58006 + ... + 59956.

It is an arithmetic number, because the mean of its divisors is an integer number (10418800).

Almost surely, 2^115071931 is an apocalyptic number.

115071931 is a deficient number, since it is larger than the sum of its proper divisors (9953669).

115071931 is a wasteful number, since it uses less digits than its factorization.

115071931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326 (or 2313 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 28.

The square root of 115071931 is about 10727.1585706561. The cubic root of 115071931 is about 486.3957822481.

The spelling of 115071931 in words is "one hundred fifteen million, seventy-one thousand, nine hundred thirty-one".