131031023031 has 48 divisors (see below), whose sum is σ = 203890246560. Its totient is φ = 83990753280.

The previous prime is 131031023003. The next prime is 131031023059. The reversal of 131031023031 is 130320130131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (131031023003) and next prime (131031023059).

It is not a de Polignac number, because 131031023031 - 2¹⁰ = 131031022007 is a prime.

It is a super-2 number, since 2×131031023031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131031022995 and 131031023013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031023531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1659751 + ... + 1736903.

It is an arithmetic number, because the mean of its divisors is an integer number (4247713470).

Almost surely, 2^131031023031 is an apocalyptic number.

131031023031 is a deficient number, since it is larger than the sum of its proper divisors (72859223529).

131031023031 is an equidigital number, since it uses as much as digits as its factorization.

131031023031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77438 (or 77426 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 131031023031 its reverse (130320130131), we get a palindrome (261351153162).

The spelling of 131031023031 in words is "one hundred thirty-one billion, thirty-one million, twenty-three thousand, thirty-one".