313143404 has 36 divisors (see below), whose sum is σ = 642031152. Its totient is φ = 130911360.

The previous prime is 313143401. The next prime is 313143419. The reversal of 313143404 is 404341313.

It is a self number, because there is not a number n which added to its sum of digits gives 313143404.

It is not an unprimeable number, because it can be changed into a prime (313143401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43742 + ... + 50394.

Almost surely, 2^313143404 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 313143404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321015576).

313143404 is an abundant number, since it is smaller than the sum of its proper divisors (328887748).

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

313143404 is a wasteful number, since it uses less digits than its factorization.

313143404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6746 (or 6703 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 313143404 is about 17695.8583855093. The cubic root of 313143404 is about 679.0698094621.

Adding to 313143404 its reverse (404341313), we get a palindrome (717484717).

The spelling of 313143404 in words is "three hundred thirteen million, one hundred forty-three thousand, four hundred four".