231802128654 has 32 divisors (see below), whose sum is σ = 474461311104. Its totient is φ = 75458439840.

The previous prime is 231802128631. The next prime is 231802128731. The reversal of 231802128654 is 456821208132.

It is a congruent number.

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, 1629637 + ... + 1766159.

It is an arithmetic number, because the mean of its divisors is an integer number (14826915972).

Almost surely, 2^231802128654 is an apocalyptic number.

231802128654 is an abundant number, since it is smaller than the sum of its proper divisors (242659182450).

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

231802128654 is a wasteful number, since it uses less digits than its factorization.

231802128654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143152.

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 231802128654 in words is "two hundred thirty-one billion, eight hundred two million, one hundred twenty-eight thousand, six hundred fifty-four".