31113302312123 has 4 divisors (see below), whose sum is σ = 31872163344168. Its totient is φ = 30354441280080.

The previous prime is 31113302312087. The next prime is 31113302312149. The reversal of 31113302312123 is 32121320331113.

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 31113302312123 - 2¹² = 31113302308027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31113302312092 and 31113302312101.

It is not an unprimeable number, because it can be changed into a prime (31113302314123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379430515961 + ... + 379430516042.

It is an arithmetic number, because the mean of its divisors is an integer number (7968040836042).

Almost surely, 2^{31113302312123} is an apocalyptic number.

31113302312123 is a deficient number, since it is larger than the sum of its proper divisors (758861032045).

31113302312123 is an equidigital number, since it uses as much as digits as its factorization.

31113302312123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758861032044.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 31113302312123 its reverse (32121320331113), we get a palindrome (63234622643236).

The spelling of 31113302312123 in words is "thirty-one trillion, one hundred thirteen billion, three hundred two million, three hundred twelve thousand, one hundred twenty-three".