312013213013 has 4 divisors (see below), whose sum is σ = 312791301228. Its totient is φ = 311235124800.

The previous prime is 312013212991. The next prime is 312013213049. The reversal of 312013213013 is 310312310213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 286308466084 + 25704746929 = 535078^2 + 160327^2 .

It is a cyclic number.

It is not a de Polignac number, because 312013213013 - 2¹² = 312013208917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312013213093) 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, 389043506 + ... + 389044307.

It is an arithmetic number, because the mean of its divisors is an integer number (78197825307).

Almost surely, 2^312013213013 is an apocalyptic number.

It is an amenable number.

312013213013 is a deficient number, since it is larger than the sum of its proper divisors (778088215).

312013213013 is an equidigital number, since it uses as much as digits as its factorization.

312013213013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778088214.

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

Adding to 312013213013 its reverse (310312310213), we get a palindrome (622325523226).

The spelling of 312013213013 in words is "three hundred twelve billion, thirteen million, two hundred thirteen thousand, thirteen".