313331213 has 4 divisors (see below), whose sum is σ = 337433628. Its totient is φ = 289228800.

The previous prime is 313331201. The next prime is 313331287. The reversal of 313331213 is 312133313.

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 194128489 + 119202724 = 13933^2 + 10918^2 .

It is a cyclic number.

It is not a de Polignac number, because 313331213 - 2¹² = 313327117 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 (313231213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12051188 + ... + 12051213.

It is an arithmetic number, because the mean of its divisors is an integer number (84358407).

Almost surely, 2^313331213 is an apocalyptic number.

It is an amenable number.

313331213 is a deficient number, since it is larger than the sum of its proper divisors (24102415).

313331213 is a wasteful number, since it uses less digits than its factorization.

313331213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24102414.

The product of its digits is 486, while the sum is 20.

The square root of 313331213 is about 17701.1641707544. The cubic root of 313331213 is about 679.2055406022.

Adding to 313331213 its reverse (312133313), we get a palindrome (625464526).

The spelling of 313331213 in words is "three hundred thirteen million, three hundred thirty-one thousand, two hundred thirteen".