323131022031 has 4 divisors (see below), whose sum is σ = 430841362712. Its totient is φ = 215420681352.

The previous prime is 323131022029. The next prime is 323131022057. The reversal of 323131022031 is 130220131323.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 323131022031 - 2¹ = 323131022029 is a prime.

It is a super-2 number, since 2×323131022031² (a number of 24 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 = 323131021989 and 323131022007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323131022831) 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, 53855170336 + ... + 53855170341.

It is an arithmetic number, because the mean of its divisors is an integer number (107710340678).

Almost surely, 2^323131022031 is an apocalyptic number.

323131022031 is a deficient number, since it is larger than the sum of its proper divisors (107710340681).

323131022031 is a wasteful number, since it uses less digits than its factorization.

323131022031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107710340680.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 323131022031 its reverse (130220131323), we get a palindrome (453351153354).

The spelling of 323131022031 in words is "three hundred twenty-three billion, one hundred thirty-one million, twenty-two thousand, thirty-one".