231421334123 has 16 divisors (see below), whose sum is σ = 279800640000. Its totient is φ = 186976734912.

The previous prime is 231421334119. The next prime is 231421334189. The reversal of 231421334123 is 321433124132.

It is a cyclic number.

It is not a de Polignac number, because 231421334123 - 2² = 231421334119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231421334723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4345418 + ... + 4398351.

It is an arithmetic number, because the mean of its divisors is an integer number (17487540000).

Almost surely, 2^231421334123 is an apocalyptic number.

231421334123 is a deficient number, since it is larger than the sum of its proper divisors (48379305877).

231421334123 is a wasteful number, since it uses less digits than its factorization.

231421334123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8743994.

The product of its digits is 10368, while the sum is 29.

Adding to 231421334123 its reverse (321433124132), we get a palindrome (552854458255).

The spelling of 231421334123 in words is "two hundred thirty-one billion, four hundred twenty-one million, three hundred thirty-four thousand, one hundred twenty-three".