231255036121 has 4 divisors (see below), whose sum is σ = 231298848000. Its totient is φ = 231211224244.

The previous prime is 231255036109. The next prime is 231255036127. The reversal of 231255036121 is 121630552132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231255036121 - 2²⁷ = 231120818393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231255036127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21898021 + ... + 21908578.

It is an arithmetic number, because the mean of its divisors is an integer number (57824712000).

Almost surely, 2^231255036121 is an apocalyptic number.

It is an amenable number.

231255036121 is a deficient number, since it is larger than the sum of its proper divisors (43811879).

231255036121 is an equidigital number, since it uses as much as digits as its factorization.

231255036121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43811878.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 231255036121 its reverse (121630552132), we get a palindrome (352885588253).

The spelling of 231255036121 in words is "two hundred thirty-one billion, two hundred fifty-five million, thirty-six thousand, one hundred twenty-one".