12313530 has 96 divisors (see below), whose sum is σ = 33965568. Its totient is φ = 3091200.

The previous prime is 12313513. The next prime is 12313537. The reversal of 12313530 is 3531321.

12313530 is a `hidden beast` number, since 123 + 13 + 530 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12313537) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 173395 + ... + 173465.

It is an arithmetic number, because the mean of its divisors is an integer number (353808).

Almost surely, 2^12313530 is an apocalyptic number.

12313530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12313530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16982784).

12313530 is an abundant number, since it is smaller than the sum of its proper divisors (21652038).

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

12313530 is a wasteful number, since it uses less digits than its factorization.

12313530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 12313530 is about 3509.0639777582. The cubic root of 12313530 is about 230.9196324686.

Adding to 12313530 its reverse (3531321), we get a palindrome (15844851).

It can be divided in two parts, 1231 and 3530, that added together give a square (4761 = 69²).

The spelling of 12313530 in words is "twelve million, three hundred thirteen thousand, five hundred thirty".