313431213 has 4 divisors (see below), whose sum is σ = 417908288. Its totient is φ = 208954140.

The previous prime is 313431199. The next prime is 313431229. The reversal of 313431213 is 312134313.

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 not a de Polignac number, because 313431213 - 2⁶ = 313431149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 313431213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313441213) 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, 52238533 + ... + 52238538.

It is an arithmetic number, because the mean of its divisors is an integer number (104477072).

Almost surely, 2^313431213 is an apocalyptic number.

It is an amenable number.

313431213 is a deficient number, since it is larger than the sum of its proper divisors (104477075).

313431213 is a wasteful number, since it uses less digits than its factorization.

313431213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104477074.

The product of its digits is 648, while the sum is 21.

The square root of 313431213 is about 17703.9886183877. The cubic root of 313431213 is about 679.2777893142.

Adding to 313431213 its reverse (312134313), we get a palindrome (625565526).

The spelling of 313431213 in words is "three hundred thirteen million, four hundred thirty-one thousand, two hundred thirteen".