231344621664 has 96 divisors (see below), whose sum is σ = 660343267584. Its totient is φ = 70491824640.

The previous prime is 231344621621. The next prime is 231344621687. The reversal of 231344621664 is 466126443132.

231344621664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 771322 + ... + 1028409.

It is an arithmetic number, because the mean of its divisors is an integer number (6878575704).

Almost surely, 2^231344621664 is an apocalyptic number.

231344621664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231344621664 is an abundant number, since it is smaller than the sum of its proper divisors (428998645920).

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

231344621664 is a wasteful number, since it uses less digits than its factorization.

231344621664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799860 (or 1799852 counting only the distinct ones).

The product of its digits is 497664, while the sum is 42.

The spelling of 231344621664 in words is "two hundred thirty-one billion, three hundred forty-four million, six hundred twenty-one thousand, six hundred sixty-four".