313431420 has 96 divisors (see below), whose sum is σ = 923065920. Its totient is φ = 79349760.

The previous prime is 313431379. The next prime is 313431439. The reversal of 313431420 is 24134313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104664 + ... + 107616.

It is an arithmetic number, because the mean of its divisors is an integer number (9615270).

Almost surely, 2^313431420 is an apocalyptic number.

313431420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 313431420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (461532960).

313431420 is an abundant number, since it is smaller than the sum of its proper divisors (609634500).

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

313431420 is a wasteful number, since it uses less digits than its factorization.

313431420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055 (or 3053 counting only the distinct ones).

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

The square root of 313431420 is about 17703.9944645269. The cubic root of 313431420 is about 679.2779388531.

Adding to 313431420 its reverse (24134313), we get a palindrome (337565733).

The spelling of 313431420 in words is "three hundred thirteen million, four hundred thirty-one thousand, four hundred twenty".