111231231232 has 72 divisors (see below), whose sum is σ = 254960465760. Its totient is φ = 47898593280.

The previous prime is 111231231191. The next prime is 111231231263. The reversal of 111231231232 is 232132132111.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 985963 + ... + 1092970.

It is an arithmetic number, because the mean of its divisors is an integer number (3541117580).

Almost surely, 2^111231231232 is an apocalyptic number.

It is an amenable number.

111231231232 is an abundant number, since it is smaller than the sum of its proper divisors (143729234528).

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

111231231232 is a wasteful number, since it uses less digits than its factorization.

111231231232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078979 (or 2078965 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 111231231232 its reverse (232132132111), we get a palindrome (343363363343).

The spelling of 111231231232 in words is "one hundred eleven billion, two hundred thirty-one million, two hundred thirty-one thousand, two hundred thirty-two".