20313111351 has 32 divisors (see below), whose sum is σ = 31055996160. Its totient is φ = 11699265024.

The previous prime is 20313111341. The next prime is 20313111353. The reversal of 20313111351 is 15311131302.

It is not a de Polignac number, because 20313111351 - 2²⁶ = 20246002487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313111353) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33096 + ... + 204258.

It is an arithmetic number, because the mean of its divisors is an integer number (970499880).

Almost surely, 2^20313111351 is an apocalyptic number.

20313111351 is a deficient number, since it is larger than the sum of its proper divisors (10742884809).

20313111351 is a wasteful number, since it uses less digits than its factorization.

20313111351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171375.

The product of its (nonzero) digits is 270, while the sum is 21.

Adding to 20313111351 its reverse (15311131302), we get a palindrome (35624242653).

The spelling of 20313111351 in words is "twenty billion, three hundred thirteen million, one hundred eleven thousand, three hundred fifty-one".