20313133131 has 8 divisors (see below), whose sum is σ = 27090004480. Its totient is φ = 13539175272.

The previous prime is 20313133079. The next prime is 20313133151. The reversal of 20313133131 is 13133131302.

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

It is not a de Polignac number, because 20313133131 - 2¹³ = 20313124939 is a prime.

It is a super-2 number, since 2×20313133131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20313133098 and 20313133107.

It is not an unprimeable number, because it can be changed into a prime (20313133151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 712051 + ... + 740028.

It is an arithmetic number, because the mean of its divisors is an integer number (3386250560).

Almost surely, 2^20313133131 is an apocalyptic number.

20313133131 is a deficient number, since it is larger than the sum of its proper divisors (6776871349).

20313133131 is a wasteful number, since it uses less digits than its factorization.

20313133131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456745.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 20313133131 its reverse (13133131302), we get a palindrome (33446264433).

The spelling of 20313133131 in words is "twenty billion, three hundred thirteen million, one hundred thirty-three thousand, one hundred thirty-one".