231224420112 has 80 divisors (see below), whose sum is σ = 694233185280. Its totient is φ = 64944383616.

The previous prime is 231224420107. The next prime is 231224420113. The reversal of 231224420112 is 211024422132.

It is a super-2 number, since 2×231224420112² (a number of 24 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (231224420113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5812108 + ... + 5851755.

It is an arithmetic number, because the mean of its divisors is an integer number (8677914816).

Almost surely, 2^231224420112 is an apocalyptic number.

It is an amenable number.

231224420112 is an abundant number, since it is smaller than the sum of its proper divisors (463008765168).

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

231224420112 is a wasteful number, since it uses less digits than its factorization.

231224420112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11663940 (or 11663934 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 231224420112 its reverse (211024422132), we get a palindrome (442248842244).

The spelling of 231224420112 in words is "two hundred thirty-one billion, two hundred twenty-four million, four hundred twenty thousand, one hundred twelve".