2131311021131 has 16 divisors (see below), whose sum is σ = 2154595935744. Its totient is φ = 2108171841984.

The previous prime is 2131311021101. The next prime is 2131311021143. The reversal of 2131311021131 is 1311201131312.

It is a cyclic number.

It is not a de Polignac number, because 2131311021131 - 2³⁴ = 2114131151947 is a prime.

It is a super-2 number, since 2×2131311021131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131311021101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32977010 + ... + 33041576.

It is an arithmetic number, because the mean of its divisors is an integer number (134662245984).

Almost surely, 2^{2131311021131} is an apocalyptic number.

2131311021131 is a deficient number, since it is larger than the sum of its proper divisors (23284914613).

2131311021131 is a wasteful number, since it uses less digits than its factorization.

2131311021131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65690.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 2131311021131 its reverse (1311201131312), we get a palindrome (3442512152443).

The spelling of 2131311021131 in words is "two trillion, one hundred thirty-one billion, three hundred eleven million, twenty-one thousand, one hundred thirty-one".