31310012433013 has 4 divisors (see below), whose sum is σ = 31310024603200. Its totient is φ = 31310000262828.

The previous prime is 31310012432983. The next prime is 31310012433017. The reversal of 31310012433013 is 31033421001313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 31310012433013 - 2⁵ = 31310012432981 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 (31310012433017) 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, 544413 + ... + 7931986.

It is an arithmetic number, because the mean of its divisors is an integer number (7827506150800).

Almost surely, 2^{31310012433013} is an apocalyptic number.

It is an amenable number.

31310012433013 is a deficient number, since it is larger than the sum of its proper divisors (12170187).

31310012433013 is an equidigital number, since it uses as much as digits as its factorization.

31310012433013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12170186.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31310012433013 its reverse (31033421001313), we get a palindrome (62343433434326).

The spelling of 31310012433013 in words is "thirty-one trillion, three hundred ten billion, twelve million, four hundred thirty-three thousand, thirteen".