20831303258 has 48 divisors (see below), whose sum is σ = 34549351200. Its totient is φ = 9382776480.

The previous prime is 20831303237. The next prime is 20831303261. The reversal of 20831303258 is 85230313802.

It is a super-2 number, since 2×20831303258² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4944773 + ... + 4948983.

It is an arithmetic number, because the mean of its divisors is an integer number (719778150).

Almost surely, 2^20831303258 is an apocalyptic number.

20831303258 is a deficient number, since it is larger than the sum of its proper divisors (13718047942).

20831303258 is a wasteful number, since it uses less digits than its factorization.

20831303258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4395 (or 4328 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 20831303258 in words is "twenty billion, eight hundred thirty-one million, three hundred three thousand, two hundred fifty-eight".