20131301012131 has 4 divisors (see below), whose sum is σ = 20132752139752. Its totient is φ = 20129849884512.

The previous prime is 20131301012063. The next prime is 20131301012153. The reversal of 20131301012131 is 13121010313102.

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 20131301012131 - 2²⁵ = 20131267457699 is a prime.

It is a super-2 number, since 2×20131301012131² (a number of 27 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 = 20131301012099 and 20131301012108.

It is not an unprimeable number, because it can be changed into a prime (20131301012161) 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 3 ways as a sum of consecutive naturals, for example, 725543001 + ... + 725570746.

It is an arithmetic number, because the mean of its divisors is an integer number (5033188034938).

Almost surely, 2^{20131301012131} is an apocalyptic number.

20131301012131 is a deficient number, since it is larger than the sum of its proper divisors (1451127621).

20131301012131 is a wasteful number, since it uses less digits than its factorization.

20131301012131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451127620.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 20131301012131 its reverse (13121010313102), we get a palindrome (33252311325233).

The spelling of 20131301012131 in words is "twenty trillion, one hundred thirty-one billion, three hundred one million, twelve thousand, one hundred thirty-one".