398831504523 has 16 divisors (see below), whose sum is σ = 560163744000. Its totient is φ = 251713478880.

The previous prime is 398831504501. The next prime is 398831504527. The reversal of 398831504523 is 325405138893.

It is a de Polignac number, because none of the positive numbers 2^k-398831504523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398831504527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2420988 + ... + 2580473.

It is an arithmetic number, because the mean of its divisors is an integer number (35010234000).

Almost surely, 2^398831504523 is an apocalyptic number.

398831504523 is a deficient number, since it is larger than the sum of its proper divisors (161332239477).

398831504523 is a wasteful number, since it uses less digits than its factorization.

398831504523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5002882.

The product of its (nonzero) digits is 3110400, while the sum is 51.

The spelling of 398831504523 in words is "three hundred ninety-eight billion, eight hundred thirty-one million, five hundred four thousand, five hundred twenty-three".