20213131310 has 8 divisors (see below), whose sum is σ = 36383636376. Its totient is φ = 8085252520.

The previous prime is 20213131307. The next prime is 20213131327. The reversal of 20213131310 is 1313131202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20213131310² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010656556 + ... + 1010656575.

It is an arithmetic number, because the mean of its divisors is an integer number (4547954547).

Almost surely, 2^20213131310 is an apocalyptic number.

20213131310 is a deficient number, since it is larger than the sum of its proper divisors (16170505066).

20213131310 is a wasteful number, since it uses less digits than its factorization.

20213131310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021313138.

The product of its (nonzero) digits is 108, while the sum is 17.

Subtracting from 20213131310 its product of nonzero digits (108), we obtain a palindrome (20213131202).

Adding to 20213131310 its reverse (1313131202), we get a palindrome (21526262512).

The spelling of 20213131310 in words is "twenty billion, two hundred thirteen million, one hundred thirty-one thousand, three hundred ten".