131023113321 has 16 divisors (see below), whose sum is σ = 178776678080. Its totient is φ = 85309519680.

The previous prime is 131023113313. The next prime is 131023113349. The reversal of 131023113321 is 123311320131.

It is a happy number.

It is not a de Polignac number, because 131023113321 - 2³ = 131023113313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131023113301) 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, 1577295 + ... + 1658283.

It is an arithmetic number, because the mean of its divisors is an integer number (11173542380).

Almost surely, 2^131023113321 is an apocalyptic number.

It is an amenable number.

131023113321 is a deficient number, since it is larger than the sum of its proper divisors (47753564759).

131023113321 is a wasteful number, since it uses less digits than its factorization.

131023113321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93576.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 131023113321 its reverse (123311320131), we get a palindrome (254334433452).

The spelling of 131023113321 in words is "one hundred thirty-one billion, twenty-three million, one hundred thirteen thousand, three hundred twenty-one".