231321121104 has 80 divisors (see below), whose sum is σ = 640414403712. Its totient is φ = 71761181184.

The previous prime is 231321121099. The next prime is 231321121117. The reversal of 231321121104 is 401121123132.

It is a super-2 number, since 2×231321121104² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2790639 + ... + 2872334.

Almost surely, 2^231321121104 is an apocalyptic number.

231321121104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231321121104 is an abundant number, since it is smaller than the sum of its proper divisors (409093282608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231321121104 is a wasteful number, since it uses less digits than its factorization.

231321121104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5663044 (or 5663038 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 231321121104 its reverse (401121123132), we get a palindrome (632442244236).

The spelling of 231321121104 in words is "two hundred thirty-one billion, three hundred twenty-one million, one hundred twenty-one thousand, one hundred four".