313422500 has 60 divisors (see below), whose sum is σ = 689366832. Its totient is φ = 124644000.

The previous prime is 313422481. The next prime is 313422503. The reversal of 313422500 is 5224313.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (313422503) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 707279 + ... + 707721.

Almost surely, 2^313422500 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 313422500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344683416).

313422500 is an abundant number, since it is smaller than the sum of its proper divisors (375944332).

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

313422500 is a wasteful number, since it uses less digits than its factorization.

313422500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 733 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 313422500 is about 17703.7425421858. The cubic root of 313422500 is about 679.2714948951.

Adding to 313422500 its reverse (5224313), we get a palindrome (318646813).

The spelling of 313422500 in words is "three hundred thirteen million, four hundred twenty-two thousand, five hundred".