231322312121 has 8 divisors (see below), whose sum is σ = 232635715200. Its totient is φ = 230010419232.

The previous prime is 231322312103. The next prime is 231322312211. The reversal of 231322312121 is 121213223132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231322312121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231322315121) 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, 69620 + ... + 683733.

It is an arithmetic number, because the mean of its divisors is an integer number (29079464400).

Almost surely, 2^231322312121 is an apocalyptic number.

It is an amenable number.

231322312121 is a deficient number, since it is larger than the sum of its proper divisors (1313403079).

231322312121 is a wasteful number, since it uses less digits than its factorization.

231322312121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755095.

The product of its digits is 864, while the sum is 23.

Adding to 231322312121 its reverse (121213223132), we get a palindrome (352535535253).

The spelling of 231322312121 in words is "two hundred thirty-one billion, three hundred twenty-two million, three hundred twelve thousand, one hundred twenty-one".