231222231312 has 80 divisors (see below), whose sum is σ = 599132700672. Its totient is φ = 76841032320.

The previous prime is 231222231287. The next prime is 231222231329. The reversal of 231222231312 is 213132222132.

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

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27369073 + ... + 27377519.

Almost surely, 2^231222231312 is an apocalyptic number.

It is an amenable number.

231222231312 is an abundant number, since it is smaller than the sum of its proper divisors (367910469360).

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

231222231312 is a wasteful number, since it uses less digits than its factorization.

231222231312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10116 (or 10110 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

Adding to 231222231312 its reverse (213132222132), we get a palindrome (444354453444).

The spelling of 231222231312 in words is "two hundred thirty-one billion, two hundred twenty-two million, two hundred thirty-one thousand, three hundred twelve".