131202031031 has 2 divisors, whose sum is σ = 131202031032. Its totient is φ = 131202031030.

The previous prime is 131202030997. The next prime is 131202031049. The reversal of 131202031031 is 130130202131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131202031031 is a prime.

It is a super-2 number, since 2×131202031031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131202031091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65601015515 + 65601015516.

It is an arithmetic number, because the mean of its divisors is an integer number (65601015516).

Almost surely, 2^131202031031 is an apocalyptic number.

131202031031 is a deficient number, since it is larger than the sum of its proper divisors (1).

131202031031 is an equidigital number, since it uses as much as digits as its factorization.

131202031031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 131202031031 its reverse (130130202131), we get a palindrome (261332233162).

The spelling of 131202031031 in words is "one hundred thirty-one billion, two hundred two million, thirty-one thousand, thirty-one".