115431994 has 16 divisors (see below), whose sum is σ = 175140000. Its totient is φ = 57055824.

The previous prime is 115431983. The next prime is 115432007. The reversal of 115431994 is 499134511.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76257 + ... + 77755.

It is an arithmetic number, because the mean of its divisors is an integer number (10946250).

Almost surely, 2^115431994 is an apocalyptic number.

115431994 is a deficient number, since it is larger than the sum of its proper divisors (59708006).

115431994 is a wasteful number, since it uses less digits than its factorization.

115431994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917.

The product of its digits is 19440, while the sum is 37.

The square root of 115431994 is about 10743.9282387775. The cubic root of 115431994 is about 486.9025689585.

The spelling of 115431994 in words is "one hundred fifteen million, four hundred thirty-one thousand, nine hundred ninety-four".