115501312 has 18 divisors (see below), whose sum is σ = 230551958. Its totient is φ = 57750528.

The previous prime is 115501307. The next prime is 115501313. The reversal of 115501312 is 213105511.

It can be written as a sum of positive squares in only one way, i.e., 98724096 + 16777216 = 9936^2 + 4096^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 115501312.

It is not an unprimeable number, because it can be changed into a prime (115501313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225333 + ... + 225844.

Almost surely, 2^115501312 is an apocalyptic number.

It is an amenable number.

115501312 is a deficient number, since it is larger than the sum of its proper divisors (115050646).

115501312 is an frugal number, since it uses more digits than its factorization.

115501312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451193 (or 451179 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 115501312 is about 10747.1536696932. The cubic root of 115501312 is about 487.0000126492. Note that the first 4 decimals are identical.

Adding to 115501312 its reverse (213105511), we get a palindrome (328606823).

The spelling of 115501312 in words is "one hundred fifteen million, five hundred one thousand, three hundred twelve".