231301233012 has 48 divisors (see below), whose sum is σ = 563376219392. Its totient is φ = 73786826880.

The previous prime is 231301232989. The next prime is 231301233013. The reversal of 231301233012 is 210332103132.

It is a self number, because there is not a number n which added to its sum of digits gives 231301233012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231301233013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4242988 + ... + 4297155.

Almost surely, 2^231301233012 is an apocalyptic number.

It is an amenable number.

231301233012 is an abundant number, since it is smaller than the sum of its proper divisors (332074986380).

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

231301233012 is a wasteful number, since it uses less digits than its factorization.

231301233012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8540248 (or 8540246 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 231301233012 its reverse (210332103132), we get a palindrome (441633336144).

The spelling of 231301233012 in words is "two hundred thirty-one billion, three hundred one million, two hundred thirty-three thousand, twelve".