231312321321 has 8 divisors (see below), whose sum is σ = 313643825760. Its totient is φ = 151594515552.

The previous prime is 231312321311. The next prime is 231312321337. The reversal of 231312321321 is 123123213132.

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

It is not a de Polignac number, because 231312321321 - 2⁶ = 231312321257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231312321291 and 231312321300.

It is not an unprimeable number, because it can be changed into a prime (231312321311) 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, 653424460 + ... + 653424813.

It is an arithmetic number, because the mean of its divisors is an integer number (39205478220).

Almost surely, 2^231312321321 is an apocalyptic number.

It is an amenable number.

231312321321 is a deficient number, since it is larger than the sum of its proper divisors (82331504439).

231312321321 is a wasteful number, since it uses less digits than its factorization.

231312321321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306849335.

The product of its digits is 1296, while the sum is 24.

Adding to 231312321321 its reverse (123123213132), we get a palindrome (354435534453).

The spelling of 231312321321 in words is "two hundred thirty-one billion, three hundred twelve million, three hundred twenty-one thousand, three hundred twenty-one".