31013110013123 has 4 divisors (see below), whose sum is σ = 35443554300720. Its totient is φ = 26582665725528.

The previous prime is 31013110013107. The next prime is 31013110013141. The reversal of 31013110013123 is 32131001131013.

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 31013110013123 - 2⁴ = 31013110013107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31013110013095 and 31013110013104.

It is not an unprimeable number, because it can be changed into a prime (31013110013023) 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, 2215222143788 + ... + 2215222143801.

It is an arithmetic number, because the mean of its divisors is an integer number (8860888575180).

Almost surely, 2^{31013110013123} is an apocalyptic number.

31013110013123 is a deficient number, since it is larger than the sum of its proper divisors (4430444287597).

31013110013123 is an equidigital number, since it uses as much as digits as its factorization.

31013110013123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4430444287596.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 31013110013123 its reverse (32131001131013), we get a palindrome (63144111144136).

The spelling of 31013110013123 in words is "thirty-one trillion, thirteen billion, one hundred ten million, thirteen thousand, one hundred twenty-three".