231304422121 has 4 divisors (see below), whose sum is σ = 231306366544. Its totient is φ = 231302477700.

The previous prime is 231304422119. The next prime is 231304422169. The reversal of 231304422121 is 121224403132.

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 231304422121 - 2¹ = 231304422119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231304422821) 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, 781275 + ... + 1035856.

It is an arithmetic number, because the mean of its divisors is an integer number (57826591636).

Almost surely, 2^231304422121 is an apocalyptic number.

It is an amenable number.

231304422121 is a deficient number, since it is larger than the sum of its proper divisors (1944423).

231304422121 is a wasteful number, since it uses less digits than its factorization.

231304422121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944422.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 231304422121 its reverse (121224403132), we get a palindrome (352528825253).

The spelling of 231304422121 in words is "two hundred thirty-one billion, three hundred four million, four hundred twenty-two thousand, one hundred twenty-one".