111231404512 has 48 divisors (see below), whose sum is σ = 236742564240. Its totient is φ = 51264534528.

The previous prime is 111231404497. The next prime is 111231404527. The reversal of 111231404512 is 215404132111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111231404497) and next prime (111231404527).

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, 2449753 + ... + 2494744.

It is an arithmetic number, because the mean of its divisors is an integer number (4932136755).

Almost surely, 2^111231404512 is an apocalyptic number.

It is an amenable number.

111231404512 is an abundant number, since it is smaller than the sum of its proper divisors (125511159728).

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

111231404512 is a wasteful number, since it uses less digits than its factorization.

111231404512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4944563 (or 4944555 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 111231404512 its reverse (215404132111), we get a palindrome (326635536623).

The spelling of 111231404512 in words is "one hundred eleven billion, two hundred thirty-one million, four hundred four thousand, five hundred twelve".