115381831 has 8 divisors (see below), whose sum is σ = 118886544. Its totient is φ = 111910080.

The previous prime is 115381817. The next prime is 115381837. The reversal of 115381831 is 138183511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115381831 is a prime.

It is a super-2 number, since 2×115381831² = 26625933849825122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115381793 and 115381802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115381837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1041 + ... + 15226.

It is an arithmetic number, because the mean of its divisors is an integer number (14860818).

Almost surely, 2^115381831 is an apocalyptic number.

115381831 is a deficient number, since it is larger than the sum of its proper divisors (3504713).

115381831 is a wasteful number, since it uses less digits than its factorization.

115381831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16481.

The product of its digits is 2880, while the sum is 31.

The square root of 115381831 is about 10741.5935037591. The cubic root of 115381831 is about 486.8320280521.

The spelling of 115381831 in words is "one hundred fifteen million, three hundred eighty-one thousand, eight hundred thirty-one".