115331129 has 4 divisors (see below), whose sum is σ = 119051520. Its totient is φ = 111610740.

The previous prime is 115331093. The next prime is 115331143. The reversal of 115331129 is 921133511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 921133511 = 41 ⋅22466671.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115331129 is a prime.

It is a super-4 number, since 4×115331129⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115331098 and 115331107.

It is not an unprimeable number, because it can be changed into a prime (115334129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1860149 + ... + 1860210.

It is an arithmetic number, because the mean of its divisors is an integer number (29762880).

Almost surely, 2^115331129 is an apocalyptic number.

It is an amenable number.

115331129 is a deficient number, since it is larger than the sum of its proper divisors (3720391).

115331129 is an equidigital number, since it uses as much as digits as its factorization.

115331129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3720390.

The product of its digits is 810, while the sum is 26.

The square root of 115331129 is about 10739.2331662926. The cubic root of 115331129 is about 486.7607084065.

The spelling of 115331129 in words is "one hundred fifteen million, three hundred thirty-one thousand, one hundred twenty-nine".