231321102123 has 32 divisors (see below), whose sum is σ = 320455586880. Its totient is φ = 148298895360.

The previous prime is 231321102097. The next prime is 231321102163. The reversal of 231321102123 is 321201123132.

It is not a de Polignac number, because 231321102123 - 2⁸ = 231321101867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231321102123.

It is not an unprimeable number, because it can be changed into a prime (231321102163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47584713 + ... + 47589573.

It is an arithmetic number, because the mean of its divisors is an integer number (10014237090).

Almost surely, 2^231321102123 is an apocalyptic number.

231321102123 is a deficient number, since it is larger than the sum of its proper divisors (89134484757).

231321102123 is a wasteful number, since it uses less digits than its factorization.

231321102123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9807.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 231321102123 its reverse (321201123132), we get a palindrome (552522225255).

The spelling of 231321102123 in words is "two hundred thirty-one billion, three hundred twenty-one million, one hundred two thousand, one hundred twenty-three".