313213404 has 72 divisors (see below), whose sum is σ = 881184640. Its totient is φ = 84588192.

The previous prime is 313213357. The next prime is 313213489. The reversal of 313213404 is 404312313.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 706807 + ... + 707249.

Almost surely, 2^313213404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 313213404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (440592320).

313213404 is an abundant number, since it is smaller than the sum of its proper divisors (567971236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

313213404 is a wasteful number, since it uses less digits than its factorization.

313213404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 313213404 is about 17697.8361389182. The cubic root of 313213404 is about 679.1204053920.

Adding to 313213404 its reverse (404312313), we get a palindrome (717525717).

The spelling of 313213404 in words is "three hundred thirteen million, two hundred thirteen thousand, four hundred four".