131312303131 has 4 divisors (see below), whose sum is σ = 138223477000. Its totient is φ = 124401129264.

The previous prime is 131312303123. The next prime is 131312303173. The reversal of 131312303131 is 131303213131.

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

It is not a de Polignac number, because 131312303131 - 2³ = 131312303123 is a prime.

It is a super-2 number, since 2×131312303131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131312303191) 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, 3455586906 + ... + 3455586943.

It is an arithmetic number, because the mean of its divisors is an integer number (34555869250).

Almost surely, 2^131312303131 is an apocalyptic number.

131312303131 is a deficient number, since it is larger than the sum of its proper divisors (6911173869).

131312303131 is an equidigital number, since it uses as much as digits as its factorization.

131312303131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6911173868.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 131312303131 its reverse (131303213131), we get a palindrome (262615516262).

The spelling of 131312303131 in words is "one hundred thirty-one billion, three hundred twelve million, three hundred three thousand, one hundred thirty-one".