313321552 has 40 divisors (see below), whose sum is σ = 652636800. Its totient is φ = 145251072.

The previous prime is 313321537. The next prime is 313321553. The reversal of 313321552 is 255123313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313321553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3324 + ... + 25252.

It is an arithmetic number, because the mean of its divisors is an integer number (16315920).

Almost surely, 2^313321552 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 313321552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326318400).

313321552 is an abundant number, since it is smaller than the sum of its proper divisors (339315248).

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

313321552 is a wasteful number, since it uses less digits than its factorization.

313321552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22003 (or 21997 counting only the distinct ones).

The product of its digits is 2700, while the sum is 25.

The square root of 313321552 is about 17700.8912769951. The cubic root of 313321552 is about 679.1985598399.

Adding to 313321552 its reverse (255123313), we get a palindrome (568444865).

The spelling of 313321552 in words is "three hundred thirteen million, three hundred twenty-one thousand, five hundred fifty-two".