231231614412 has 12 divisors (see below), whose sum is σ = 539540433656. Its totient is φ = 77077204800.

The previous prime is 231231614357. The next prime is 231231614413. The reversal of 231231614412 is 214416132132.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×231231614412² (a number of 24 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 231231614412.

It is not an unprimeable number, because it can be changed into a prime (231231614413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9634650589 + ... + 9634650612.

Almost surely, 2^231231614412 is an apocalyptic number.

It is an amenable number.

231231614412 is an abundant number, since it is smaller than the sum of its proper divisors (308308819244).

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

231231614412 is a wasteful number, since it uses less digits than its factorization.

231231614412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19269301208 (or 19269301206 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

Adding to 231231614412 its reverse (214416132132), we get a palindrome (445647746544).

The spelling of 231231614412 in words is "two hundred thirty-one billion, two hundred thirty-one million, six hundred fourteen thousand, four hundred twelve".