20957431190310 has 24 divisors (see below), whose sum is σ = 54489321095040. Its totient is φ = 5588648317392.

The previous prime is 20957431190291. The next prime is 20957431190329. The reversal of 20957431190310 is 1309113475902.

20957431190310 is a `hidden beast` number, since 2 + 0 + 9 + 574 + 31 + 19 + 0 + 31 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (20957431190291) and next prime (20957431190329).

It is a super-2 number, since 2×20957431190310² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116430173190 + ... + 116430173369.

It is an arithmetic number, because the mean of its divisors is an integer number (2270388378960).

Almost surely, 2^{20957431190310} is an apocalyptic number.

20957431190310 is an abundant number, since it is smaller than the sum of its proper divisors (33531889904730).

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

20957431190310 is a wasteful number, since it uses less digits than its factorization.

20957431190310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232860346572 (or 232860346569 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The spelling of 20957431190310 in words is "twenty trillion, nine hundred fifty-seven billion, four hundred thirty-one million, one hundred ninety thousand, three hundred ten".