115403031 has 24 divisors (see below), whose sum is σ = 169238160. Its totient is φ = 75770496.

The previous prime is 115403027. The next prime is 115403039. The reversal of 115403031 is 130304511.

It is not a de Polignac number, because 115403031 - 2² = 115403027 is a prime.

It is a super-2 number, since 2×115403031² = 26635719127973922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 115402995 and 115403013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115403039) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 281955 + ... + 282363.

It is an arithmetic number, because the mean of its divisors is an integer number (7051590).

Almost surely, 2^115403031 is an apocalyptic number.

115403031 is a deficient number, since it is larger than the sum of its proper divisors (53835129).

115403031 is a wasteful number, since it uses less digits than its factorization.

115403031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815 (or 812 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 115403031 is about 10742.5802766375. The cubic root of 115403031 is about 486.8618427027.

Adding to 115403031 its reverse (130304511), we get a palindrome (245707542).

The spelling of 115403031 in words is "one hundred fifteen million, four hundred three thousand, thirty-one".