20302313111131 has 4 divisors (see below), whose sum is σ = 20419667522352. Its totient is φ = 20184958699912.

The previous prime is 20302313111111. The next prime is 20302313111141. The reversal of 20302313111131 is 13111131320302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20302313111131 - 2¹⁵ = 20302313078363 is a prime.

It is a super-2 number, since 2×20302313111131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20302313111111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58677205351 + ... + 58677205696.

It is an arithmetic number, because the mean of its divisors is an integer number (5104916880588).

Almost surely, 2^{20302313111131} is an apocalyptic number.

20302313111131 is a deficient number, since it is larger than the sum of its proper divisors (117354411221).

20302313111131 is a wasteful number, since it uses less digits than its factorization.

20302313111131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117354411220.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 20302313111131 its reverse (13111131320302), we get a palindrome (33413444431433).

The spelling of 20302313111131 in words is "twenty trillion, three hundred two billion, three hundred thirteen million, one hundred eleven thousand, one hundred thirty-one".