313245440 has 72 divisors (see below), whose sum is σ = 758062368. Its totient is φ = 124006400.

The previous prime is 313245341. The next prime is 313245463. The reversal of 313245440 is 44542313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128069 + ... + 130491.

It is an arithmetic number, because the mean of its divisors is an integer number (10528644).

Almost surely, 2^313245440 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 313245440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379031184).

313245440 is an abundant number, since it is smaller than the sum of its proper divisors (444816928).

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

313245440 is a wasteful number, since it uses less digits than its factorization.

313245440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2545 (or 2531 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 313245440 is about 17698.7411981756. The cubic root of 313245440 is about 679.1435584662.

Adding to 313245440 its reverse (44542313), we get a palindrome (357787753).

The spelling of 313245440 in words is "three hundred thirteen million, two hundred forty-five thousand, four hundred forty".