115431305 has 32 divisors (see below), whose sum is σ = 156739968. Its totient is φ = 80870400.

The previous prime is 115431287. The next prime is 115431311. The reversal of 115431305 is 503134511.

It is not a de Polignac number, because 115431305 - 2²⁶ = 48322441 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 266369 + ... + 266801.

It is an arithmetic number, because the mean of its divisors is an integer number (4898124).

Almost surely, 2^115431305 is an apocalyptic number.

It is an amenable number.

115431305 is a deficient number, since it is larger than the sum of its proper divisors (41308663).

115431305 is a wasteful number, since it uses less digits than its factorization.

115431305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 115431305 is about 10743.8961741074. The cubic root of 115431305 is about 486.9016002018.

Adding to 115431305 its reverse (503134511), we get a palindrome (618565816).

The spelling of 115431305 in words is "one hundred fifteen million, four hundred thirty-one thousand, three hundred five".