31023320312123 has 16 divisors (see below), whose sum is σ = 33805044787200. Its totient is φ = 28361859229440.

The previous prime is 31023320312107. The next prime is 31023320312129. The reversal of 31023320312123 is 32121302332013.

It is a cyclic number.

It is not a de Polignac number, because 31023320312123 - 2⁴ = 31023320312107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31023320312092 and 31023320312101.

It is not an unprimeable number, because it can be changed into a prime (31023320312129) 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, 74397143 + ... + 74812976.

It is an arithmetic number, because the mean of its divisors is an integer number (2112815299200).

Almost surely, 2^{31023320312123} is an apocalyptic number.

31023320312123 is a deficient number, since it is larger than the sum of its proper divisors (2781724475077).

31023320312123 is a wasteful number, since it uses less digits than its factorization.

31023320312123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149210522.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 31023320312123 its reverse (32121302332013), we get a palindrome (63144622644136).

The spelling of 31023320312123 in words is "thirty-one trillion, twenty-three billion, three hundred twenty million, three hundred twelve thousand, one hundred twenty-three".