20501301031131 has 64 divisors (see below), whose sum is σ = 28979534592000. Its totient is φ = 12865820267520.

The previous prime is 20501301031067. The next prime is 20501301031163. The reversal of 20501301031131 is 13113010310502.

It is not a de Polignac number, because 20501301031131 - 2⁶ = 20501301031067 is a prime.

It is a super-2 number, since 2×20501301031131² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20501301031098 and 20501301031107.

It is not an unprimeable number, because it can be changed into a prime (20501301031171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1192690285 + ... + 1192707473.

It is an arithmetic number, because the mean of its divisors is an integer number (452805228000).

Almost surely, 2^{20501301031131} is an apocalyptic number.

20501301031131 is a deficient number, since it is larger than the sum of its proper divisors (8478233560869).

20501301031131 is a wasteful number, since it uses less digits than its factorization.

20501301031131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18204.

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

Adding to 20501301031131 its reverse (13113010310502), we get a palindrome (33614311341633).

The spelling of 20501301031131 in words is "twenty trillion, five hundred one billion, three hundred one million, thirty-one thousand, one hundred thirty-one".