31313001020123 has 2 divisors, whose sum is σ = 31313001020124. Its totient is φ = 31313001020122.

The previous prime is 31313001020117. The next prime is 31313001020141. The reversal of 31313001020123 is 32102010031313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31313001020123 - 2⁴⁰ = 30213489392347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31313001020095 and 31313001020104.

It is not a weakly prime, because it can be changed into another prime (31313001020183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656500510061 + 15656500510062.

It is an arithmetic number, because the mean of its divisors is an integer number (15656500510062).

Almost surely, 2^{31313001020123} is an apocalyptic number.

31313001020123 is a deficient number, since it is larger than the sum of its proper divisors (1).

31313001020123 is an equidigital number, since it uses as much as digits as its factorization.

31313001020123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31313001020123 its reverse (32102010031313), we get a palindrome (63415011051436).

The spelling of 31313001020123 in words is "thirty-one trillion, three hundred thirteen billion, one million, twenty thousand, one hundred twenty-three".