312313213 has 4 divisors (see below), whose sum is σ = 314183520. Its totient is φ = 310442908.

The previous prime is 312313181. The next prime is 312313223.

312313213 is nontrivially palindromic in base 10.

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 not a de Polignac number, because 312313213 - 2⁵ = 312313181 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 (312313223) 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, 934903 + ... + 935236.

It is an arithmetic number, because the mean of its divisors is an integer number (78545880).

Almost surely, 2^312313213 is an apocalyptic number.

It is an amenable number.

312313213 is a deficient number, since it is larger than the sum of its proper divisors (1870307).

312313213 is a wasteful number, since it uses less digits than its factorization.

312313213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870306.

The product of its digits is 324, while the sum is 19.

The square root of 312313213 is about 17672.3856057975. The cubic root of 312313213 is about 678.4691724221.

The spelling of 312313213 in words is "three hundred twelve million, three hundred thirteen thousand, two hundred thirteen".