31320310310123 has 4 divisors (see below), whose sum is σ = 31320582498960. Its totient is φ = 31320038121288.

The previous prime is 31320310310089. The next prime is 31320310310129. The reversal of 31320310310123 is 32101301302313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31320310310123 - 2²⁴ = 31320293532907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31320310310129) 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, 135921743 + ... + 136151976.

It is an arithmetic number, because the mean of its divisors is an integer number (7830145624740).

Almost surely, 2^{31320310310123} is an apocalyptic number.

31320310310123 is a deficient number, since it is larger than the sum of its proper divisors (272188837).

31320310310123 is a wasteful number, since it uses less digits than its factorization.

31320310310123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272188836.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 31320310310123 its reverse (32101301302313), we get a palindrome (63421611612436).

The spelling of 31320310310123 in words is "thirty-one trillion, three hundred twenty billion, three hundred ten million, three hundred ten thousand, one hundred twenty-three".