231322021413 has 16 divisors (see below), whose sum is σ = 352502730240. Its totient is φ = 132179500656.

The previous prime is 231322021391. The next prime is 231322021471. The reversal of 231322021413 is 314120223132.

It is not a de Polignac number, because 231322021413 - 2²⁰ = 231320972837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231322021213) 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, 500598 + ... + 844536.

It is an arithmetic number, because the mean of its divisors is an integer number (22031420640).

Almost surely, 2^231322021413 is an apocalyptic number.

It is an amenable number.

231322021413 is a deficient number, since it is larger than the sum of its proper divisors (121180708827).

231322021413 is a wasteful number, since it uses less digits than its factorization.

231322021413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375976.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 231322021413 its reverse (314120223132), we get a palindrome (545442244545).

The spelling of 231322021413 in words is "two hundred thirty-one billion, three hundred twenty-two million, twenty-one thousand, four hundred thirteen".