123213404312321 has 4 divisors (see below), whose sum is σ = 123311270401200. Its totient is φ = 123115538223444.

The previous prime is 123213404312263. The next prime is 123213404312357.

123213404312321 is nontrivially palindromic in base 10.

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 a de Polignac number, because none of the positive numbers 2^k-123213404312321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123213404311321) 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, 48933042551 + ... + 48933045068.

It is an arithmetic number, because the mean of its divisors is an integer number (30827817600300).

Almost surely, 2^{123213404312321} is an apocalyptic number.

It is an amenable number.

123213404312321 is a deficient number, since it is larger than the sum of its proper divisors (97866088879).

123213404312321 is an equidigital number, since it uses as much as digits as its factorization.

123213404312321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97866088878.

The product of its (nonzero) digits is 20736, while the sum is 32.

It can be divided in two parts, 12321340 and 4312321, that added together give a palindrome (16633661).

The spelling of 123213404312321 in words is "one hundred twenty-three trillion, two hundred thirteen billion, four hundred four million, three hundred twelve thousand, three hundred twenty-one".