312113020013 has 4 divisors (see below), whose sum is σ = 312193444668. Its totient is φ = 312032595360.

The previous prime is 312113019997. The next prime is 312113020183. The reversal of 312113020013 is 310020311213.

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 209263247209 + 102849772804 = 457453^2 + 320702^2 .

It is a cyclic number.

It is not a de Polignac number, because 312113020013 - 2⁴ = 312113019997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312113019973 and 312113020000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312113020213) 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, 40206506 + ... + 40214267.

It is an arithmetic number, because the mean of its divisors is an integer number (78048361167).

Almost surely, 2^312113020013 is an apocalyptic number.

It is an amenable number.

312113020013 is a deficient number, since it is larger than the sum of its proper divisors (80424655).

312113020013 is an equidigital number, since it uses as much as digits as its factorization.

312113020013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80424654.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 312113020013 its reverse (310020311213), we get a palindrome (622133331226).

The spelling of 312113020013 in words is "three hundred twelve billion, one hundred thirteen million, twenty thousand, thirteen".