231320013321 has 8 divisors (see below), whose sum is σ = 308968737120. Its totient is φ = 153942315872.

The previous prime is 231320013277. The next prime is 231320013367. The reversal of 231320013321 is 123310023132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231320013321 - 2²² = 231315819017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231320013121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67754595 + ... + 67758008.

It is an arithmetic number, because the mean of its divisors is an integer number (38621092140).

Almost surely, 2^231320013321 is an apocalyptic number.

It is an amenable number.

231320013321 is a deficient number, since it is larger than the sum of its proper divisors (77648723799).

231320013321 is a wasteful number, since it uses less digits than its factorization.

231320013321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135513175.

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

Adding to 231320013321 its reverse (123310023132), we get a palindrome (354630036453).

The spelling of 231320013321 in words is "two hundred thirty-one billion, three hundred twenty million, thirteen thousand, three hundred twenty-one".