313212013 has 4 divisors (see below), whose sum is σ = 313925920. Its totient is φ = 312498108.

The previous prime is 313212001. The next prime is 313212041. The reversal of 313212013 is 310212313.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313212013 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 (313213013) 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, 356295 + ... + 357172.

It is an arithmetic number, because the mean of its divisors is an integer number (78481480).

Almost surely, 2^313212013 is an apocalyptic number.

It is an amenable number.

313212013 is a deficient number, since it is larger than the sum of its proper divisors (713907).

313212013 is an equidigital number, since it uses as much as digits as its factorization.

313212013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713906.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 313212013 is about 17697.7968402850. The cubic root of 313212013 is about 679.1194000520.

Adding to 313212013 its reverse (310212313), we get a palindrome (623424326).

The spelling of 313212013 in words is "three hundred thirteen million, two hundred twelve thousand, thirteen".