111520031424 has 28 divisors (see below), whose sum is σ = 295063416984. Its totient is φ = 37173343744.

The previous prime is 111520031419. The next prime is 111520031431. The reversal of 111520031424 is 424130025111.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 111520031394 and 111520031403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290416557 + ... + 290416940.

It is an arithmetic number, because the mean of its divisors is an integer number (10537979178).

Almost surely, 2^111520031424 is an apocalyptic number.

It is an amenable number.

111520031424 is an abundant number, since it is smaller than the sum of its proper divisors (183543385560).

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

111520031424 is an equidigital number, since it uses as much as digits as its factorization.

111520031424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580833512 (or 580833502 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 111520031424 its reverse (424130025111), we get a palindrome (535650056535).

The spelling of 111520031424 in words is "one hundred eleven billion, five hundred twenty million, thirty-one thousand, four hundred twenty-four".