12310140 has 48 divisors (see below), whose sum is σ = 34675200. Its totient is φ = 3263040.

The previous prime is 12310121. The next prime is 12310147. The reversal of 12310140 is 4101321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12310147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11425 + ... + 12455.

It is an arithmetic number, because the mean of its divisors is an integer number (722400).

Almost surely, 2^12310140 is an apocalyptic number.

12310140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12310140 is an abundant number, since it is smaller than the sum of its proper divisors (22365060).

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

12310140 is a wasteful number, since it uses less digits than its factorization.

12310140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242 (or 1240 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 12310140 is about 3508.5809097126. The cubic root of 12310140 is about 230.8984392661.

Adding to 12310140 its reverse (4101321), we get a palindrome (16411461).

The spelling of 12310140 in words is "twelve million, three hundred ten thousand, one hundred forty".