313331420 has 24 divisors (see below), whose sum is σ = 696702384. Its totient is φ = 117959936.

The previous prime is 313331419. The next prime is 313331423. The reversal of 313331420 is 24133313.

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

It is a junction number, because it is equal to n+sod(n) for n = 313331392 and 313331401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313331423) 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, 460442 + ... + 461121.

It is an arithmetic number, because the mean of its divisors is an integer number (29029266).

Almost surely, 2^313331420 is an apocalyptic number.

It is an amenable number.

313331420 is an abundant number, since it is smaller than the sum of its proper divisors (383370964).

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

313331420 is a wasteful number, since it uses less digits than its factorization.

313331420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921589 (or 921587 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 313331420 is about 17701.1700178265. The cubic root of 313331420 is about 679.2056901729.

Adding to 313331420 its reverse (24133313), we get a palindrome (337464733).

The spelling of 313331420 in words is "three hundred thirteen million, three hundred thirty-one thousand, four hundred twenty".