205231423504 has 40 divisors (see below), whose sum is σ = 406329707520. Its totient is φ = 100374655488.

The previous prime is 205231423447. The next prime is 205231423519. The reversal of 205231423504 is 405324132502.

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, 1245192 + ... + 1400344.

It is an arithmetic number, because the mean of its divisors is an integer number (10158242688).

Almost surely, 2^205231423504 is an apocalyptic number.

It is an amenable number.

205231423504 is a deficient number, since it is larger than the sum of its proper divisors (201098284016).

205231423504 is a wasteful number, since it uses less digits than its factorization.

205231423504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156967 (or 156961 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

The spelling of 205231423504 in words is "two hundred five billion, two hundred thirty-one million, four hundred twenty-three thousand, five hundred four".