115631144428 has 24 divisors (see below), whose sum is σ = 206246313504. Its totient is φ = 56711894400.

The previous prime is 115631144423. The next prime is 115631144429. The reversal of 115631144428 is 824441136511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (115631144423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 977433 + ... + 1089328.

It is an arithmetic number, because the mean of its divisors is an integer number (8593596396).

Almost surely, 2^115631144428 is an apocalyptic number.

It is an amenable number.

115631144428 is a deficient number, since it is larger than the sum of its proper divisors (90615169076).

115631144428 is a wasteful number, since it uses less digits than its factorization.

115631144428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067033 (or 2067031 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The spelling of 115631144428 in words is "one hundred fifteen billion, six hundred thirty-one million, one hundred forty-four thousand, four hundred twenty-eight".