31231320022123 has 16 divisors (see below), whose sum is σ = 34062250360320. Its totient is φ = 28461666508704.

The previous prime is 31231320022109. The next prime is 31231320022127. The reversal of 31231320022123 is 32122002313213.

It is not a de Polignac number, because 31231320022123 - 2³⁷ = 31093881068651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31231320022127) 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, 11421840 + ... + 13889602.

It is an arithmetic number, because the mean of its divisors is an integer number (2128890647520).

Almost surely, 2^{31231320022123} is an apocalyptic number.

31231320022123 is a deficient number, since it is larger than the sum of its proper divisors (2830930338197).

31231320022123 is a wasteful number, since it uses less digits than its factorization.

31231320022123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480178.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31231320022123 its reverse (32122002313213), we get a palindrome (63353322335336).

The spelling of 31231320022123 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred twenty million, twenty-two thousand, one hundred twenty-three".