131312420913131 has 4 divisors (see below), whose sum is σ = 134515162886664. Its totient is φ = 128109678939600.

The previous prime is 131312420913119. The next prime is 131312420913133. The reversal of 131312420913131 is 131319024213131.

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

It is a de Polignac number, because none of the positive numbers 2^k-131312420913131 is a prime.

It is a super-2 number, since 2×131312420913131² (a number of 29 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 = 131312420913091 and 131312420913100.

It is not an unprimeable number, because it can be changed into a prime (131312420913133) 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, 1601370986705 + ... + 1601370986786.

It is an arithmetic number, because the mean of its divisors is an integer number (33628790721666).

Almost surely, 2^{131312420913131} is an apocalyptic number.

131312420913131 is a deficient number, since it is larger than the sum of its proper divisors (3202741973533).

131312420913131 is an equidigital number, since it uses as much as digits as its factorization.

131312420913131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3202741973532.

The product of its (nonzero) digits is 11664, while the sum is 35.

The spelling of 131312420913131 in words is "one hundred thirty-one trillion, three hundred twelve billion, four hundred twenty million, nine hundred thirteen thousand, one hundred thirty-one".