312323213 has 4 divisors (see below), whose sum is σ = 312504348. Its totient is φ = 312142080.

The previous prime is 312323191. The next prime is 312323251.

312323213 is nontrivially palindromic in base 10.

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 5442889 + 306880324 = 2333^2 + 17518^2 .

It is a cyclic number.

It is not a de Polignac number, because 312323213 - 2⁶ = 312323149 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 (312323293) 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, 87956 + ... + 91437.

It is an arithmetic number, because the mean of its divisors is an integer number (78126087).

Almost surely, 2^312323213 is an apocalyptic number.

It is an amenable number.

312323213 is a deficient number, since it is larger than the sum of its proper divisors (181135).

312323213 is a wasteful number, since it uses less digits than its factorization.

312323213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181134.

The product of its digits is 648, while the sum is 20.

The square root of 312323213 is about 17672.6685308133. The cubic root of 312323213 is about 678.4764136776.

The spelling of 312323213 in words is "three hundred twelve million, three hundred twenty-three thousand, two hundred thirteen".