131021430113021 has 16 divisors (see below), whose sum is σ = 149758966281600. Its totient is φ = 112288942379328.

The previous prime is 131021430113017. The next prime is 131021430113081. The reversal of 131021430113021 is 120311034120131.

It is a cyclic number.

It is not a de Polignac number, because 131021430113021 - 2² = 131021430113017 is a prime.

It is a super-2 number, since 2×131021430113021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131021430113081) 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, 2066910995 + ... + 2066974383.

It is an arithmetic number, because the mean of its divisors is an integer number (9359935392600).

Almost surely, 2^{131021430113021} is an apocalyptic number.

It is an amenable number.

131021430113021 is a deficient number, since it is larger than the sum of its proper divisors (18737536168579).

131021430113021 is a wasteful number, since it uses less digits than its factorization.

131021430113021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98548.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 131021430113021 its reverse (120311034120131), we get a palindrome (251332464233152).

The spelling of 131021430113021 in words is "one hundred thirty-one trillion, twenty-one billion, four hundred thirty million, one hundred thirteen thousand, twenty-one".