233131133121 has 4 divisors (see below), whose sum is σ = 310841510832. Its totient is φ = 155420755412.

The previous prime is 233131133093. The next prime is 233131133143. The reversal of 233131133121 is 121331131332.

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 233131133121 - 2⁵ = 233131133089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 233131133091 and 233131133100.

It is not an unprimeable number, because it can be changed into a prime (233131133171) 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, 38855188851 + ... + 38855188856.

It is an arithmetic number, because the mean of its divisors is an integer number (77710377708).

Almost surely, 2^233131133121 is an apocalyptic number.

It is an amenable number.

233131133121 is a deficient number, since it is larger than the sum of its proper divisors (77710377711).

233131133121 is an equidigital number, since it uses as much as digits as its factorization.

233131133121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77710377710.

The product of its digits is 972, while the sum is 24.

Adding to 233131133121 its reverse (121331131332), we get a palindrome (354462264453).

The spelling of 233131133121 in words is "two hundred thirty-three billion, one hundred thirty-one million, one hundred thirty-three thousand, one hundred twenty-one".