31112120311223 has 16 divisors (see below), whose sum is σ = 37168303349760. Its totient is φ = 25480614182400.

The previous prime is 31112120311171. The next prime is 31112120311253. The reversal of 31112120311223 is 32211302121113.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31112120311223 - 2¹⁴ = 31112120294839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112120311253) 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, 907412138 + ... + 907446423.

It is an arithmetic number, because the mean of its divisors is an integer number (2323018959360).

Almost surely, 2^{31112120311223} is an apocalyptic number.

31112120311223 is a deficient number, since it is larger than the sum of its proper divisors (6056183038537).

31112120311223 is a wasteful number, since it uses less digits than its factorization.

31112120311223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814858678.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 31112120311223 its reverse (32211302121113), we get a palindrome (63323422432336).

The spelling of 31112120311223 in words is "thirty-one trillion, one hundred twelve billion, one hundred twenty million, three hundred eleven thousand, two hundred twenty-three".