231020654644 has 24 divisors (see below), whose sum is σ = 442764493920. Its totient is φ = 104817714144.

The previous prime is 231020654581. The next prime is 231020654651. The reversal of 231020654644 is 446456020132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37646974 + ... + 37653109.

It is an arithmetic number, because the mean of its divisors is an integer number (18448520580).

Almost surely, 2^231020654644 is an apocalyptic number.

It is an amenable number.

231020654644 is a deficient number, since it is larger than the sum of its proper divisors (211743839276).

231020654644 is a wasteful number, since it uses less digits than its factorization.

231020654644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75300159 (or 75300157 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 231020654644 its reverse (446456020132), we get a palindrome (677476674776).

The spelling of 231020654644 in words is "two hundred thirty-one billion, twenty million, six hundred fifty-four thousand, six hundred forty-four".