115131320 has 32 divisors (see below), whose sum is σ = 259992720. Its totient is φ = 45884160.

The previous prime is 115131283. The next prime is 115131349. The reversal of 115131320 is 23131511.

It is a congruent number.

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, 6119 + ... + 16361.

Almost surely, 2^115131320 is an apocalyptic number.

115131320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115131320 is an abundant number, since it is smaller than the sum of its proper divisors (144861400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115131320 is a wasteful number, since it uses less digits than its factorization.

115131320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10535 (or 10531 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 115131320 is about 10729.9263743979. The cubic root of 115131320 is about 486.4794446751.

Adding to 115131320 its reverse (23131511), we get a palindrome (138262831).

The spelling of 115131320 in words is "one hundred fifteen million, one hundred thirty-one thousand, three hundred twenty".