131012222031 has 24 divisors (see below), whose sum is σ = 190389863664. Its totient is φ = 86812200960.

The previous prime is 131012222021. The next prime is 131012222051. The reversal of 131012222031 is 130222210131.

It is not a de Polignac number, because 131012222031 - 2³⁰ = 129938480207 is a prime.

It is a super-2 number, since 2×131012222031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131012221995 and 131012222013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131012222021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1004860 + ... + 1127726.

It is an arithmetic number, because the mean of its divisors is an integer number (7932910986).

Almost surely, 2^131012222031 is an apocalyptic number.

131012222031 is a deficient number, since it is larger than the sum of its proper divisors (59377641633).

131012222031 is a wasteful number, since it uses less digits than its factorization.

131012222031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123591 (or 123588 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 131012222031 its reverse (130222210131), we get a palindrome (261234432162).

The spelling of 131012222031 in words is "one hundred thirty-one billion, twelve million, two hundred twenty-two thousand, thirty-one".