131203312031 has 16 divisors (see below), whose sum is σ = 148083755040. Its totient is φ = 115149310080.

The previous prime is 131203312007. The next prime is 131203312039. The reversal of 131203312031 is 130213302131.

It is a cyclic number.

It is not a de Polignac number, because 131203312031 - 2²² = 131199117727 is a prime.

It is a super-2 number, since 2×131203312031² (a number of 23 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 = 131203311994 and 131203312012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131203312039) 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, 3527825 + ... + 3564821.

It is an arithmetic number, because the mean of its divisors is an integer number (9255234690).

Almost surely, 2^131203312031 is an apocalyptic number.

131203312031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131203312031 is a deficient number, since it is larger than the sum of its proper divisors (16880443009).

131203312031 is a wasteful number, since it uses less digits than its factorization.

131203312031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48154.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 131203312031 its reverse (130213302131), we get a palindrome (261416614162).

The spelling of 131203312031 in words is "one hundred thirty-one billion, two hundred three million, three hundred twelve thousand, thirty-one".