131033231321 has 16 divisors (see below), whose sum is σ = 138187468800. Its totient is φ = 123905004048.

The previous prime is 131033231279. The next prime is 131033231339. The reversal of 131033231321 is 123132330131.

It is a cyclic number.

It is not a de Polignac number, because 131033231321 - 2²⁶ = 130966122457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131033831321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43401350 + ... + 43404368.

It is an arithmetic number, because the mean of its divisors is an integer number (8636716800).

Almost surely, 2^131033231321 is an apocalyptic number.

It is an amenable number.

131033231321 is a deficient number, since it is larger than the sum of its proper divisors (7154237479).

131033231321 is a wasteful number, since it uses less digits than its factorization.

131033231321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6548.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 131033231321 its reverse (123132330131), we get a palindrome (254165561452).

The spelling of 131033231321 in words is "one hundred thirty-one billion, thirty-three million, two hundred thirty-one thousand, three hundred twenty-one".