131023323031 has 4 divisors (see below), whose sum is σ = 131027941000. Its totient is φ = 131018705064.

The previous prime is 131023323023. The next prime is 131023323047. The reversal of 131023323031 is 130323320131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130323320131 = 61 ⋅2136447871.

It is a cyclic number.

It is not a de Polignac number, because 131023323031 - 2³ = 131023323023 is a prime.

It is a super-2 number, since 2×131023323031² (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 = 131023322993 and 131023323011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131023323001) 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, 2266161 + ... + 2323258.

It is an arithmetic number, because the mean of its divisors is an integer number (32756985250).

Almost surely, 2^131023323031 is an apocalyptic number.

131023323031 is a deficient number, since it is larger than the sum of its proper divisors (4617969).

131023323031 is an equidigital number, since it uses as much as digits as its factorization.

131023323031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4617968.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 131023323031 its reverse (130323320131), we get a palindrome (261346643162).

The spelling of 131023323031 in words is "one hundred thirty-one billion, twenty-three million, three hundred twenty-three thousand, thirty-one".