31012421013 has 24 divisors (see below), whose sum is σ = 53420984448. Its totient is φ = 16950887712.

The previous prime is 31012420979. The next prime is 31012421021.

31012421013 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31012421013 - 2⁶ = 31012420949 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012421023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10699870 + ... + 10702767.

It is an arithmetic number, because the mean of its divisors is an integer number (2225874352).

Almost surely, 2^31012421013 is an apocalyptic number.

It is an amenable number.

31012421013 is a deficient number, since it is larger than the sum of its proper divisors (22408563435).

31012421013 is a wasteful number, since it uses less digits than its factorization.

31012421013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21402673 (or 21402670 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The spelling of 31012421013 in words is "thirty-one billion, twelve million, four hundred twenty-one thousand, thirteen".