231555470164 has 12 divisors (see below), whose sum is σ = 405235353600. Its totient is φ = 115773940568.

The previous prime is 231555470149. The next prime is 231555470227. The reversal of 231555470164 is 461074555132.

It is a self number, because there is not a number n which added to its sum of digits gives 231555470164.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 809044 + ... + 1057195.

It is an arithmetic number, because the mean of its divisors is an integer number (33769612800).

Almost surely, 2^231555470164 is an apocalyptic number.

It is an amenable number.

231555470164 is a deficient number, since it is larger than the sum of its proper divisors (173679883436).

231555470164 is a wasteful number, since it uses less digits than its factorization.

231555470164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897262 (or 1897260 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 231555470164 in words is "two hundred thirty-one billion, five hundred fifty-five million, four hundred seventy thousand, one hundred sixty-four".