231003312121 has 8 divisors (see below), whose sum is σ = 243171954080. Its totient is φ = 218835727488.

The previous prime is 231003312101. The next prime is 231003312139. The reversal of 231003312121 is 121213300132.

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 231003312121 - 2¹⁷ = 231003181049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231003312101) 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, 205570 + ... + 710116.

It is an arithmetic number, because the mean of its divisors is an integer number (30396494260).

Almost surely, 2^231003312121 is an apocalyptic number.

It is an amenable number.

231003312121 is a deficient number, since it is larger than the sum of its proper divisors (12168641959).

231003312121 is a wasteful number, since it uses less digits than its factorization.

231003312121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528663.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 231003312121 its reverse (121213300132), we get a palindrome (352216612253).

The spelling of 231003312121 in words is "two hundred thirty-one billion, three million, three hundred twelve thousand, one hundred twenty-one".