12313420 has 48 divisors (see below), whose sum is σ = 29752128. Its totient is φ = 4193280.

The previous prime is 12313409. The next prime is 12313447. The reversal of 12313420 is 2431321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12313394 and 12313403.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39184 + ... + 39496.

It is an arithmetic number, because the mean of its divisors is an integer number (619836).

Almost surely, 2^12313420 is an apocalyptic number.

12313420 is a gapful number since it is divisible by the number (10) 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 12313420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14876064).

12313420 is an abundant number, since it is smaller than the sum of its proper divisors (17438708).

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

12313420 is a wasteful number, since it uses less digits than its factorization.

12313420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 12313420 is about 3509.0483040277. The cubic root of 12313420 is about 230.9189448446.

Adding to 12313420 its reverse (2431321), we get a palindrome (14744741).

The spelling of 12313420 in words is "twelve million, three hundred thirteen thousand, four hundred twenty".