115309031 has 2 divisors, whose sum is σ = 115309032. Its totient is φ = 115309030.

The previous prime is 115309009. The next prime is 115309039. The reversal of 115309031 is 130903511.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115309031 is a prime.

It is a super-2 number, since 2×115309031² = 26592345260317922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 115308988 and 115309006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115309039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57654515 + 57654516.

It is an arithmetic number, because the mean of its divisors is an integer number (57654516).

Almost surely, 2^115309031 is an apocalyptic number.

115309031 is a deficient number, since it is larger than the sum of its proper divisors (1).

115309031 is an equidigital number, since it uses as much as digits as its factorization.

115309031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 115309031 is about 10738.2042725960. The cubic root of 115309031 is about 486.7296178550.

The spelling of 115309031 in words is "one hundred fifteen million, three hundred nine thousand, thirty-one".