12331940 has 12 divisors (see below), whose sum is σ = 25897116. Its totient is φ = 4932768.

The previous prime is 12331909. The next prime is 12331951. The reversal of 12331940 is 4913321.

12331940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5654884 + 6677056 = 2378^2 + 2584^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308279 + ... + 308318.

It is an arithmetic number, because the mean of its divisors is an integer number (2158093).

Almost surely, 2^12331940 is an apocalyptic number.

12331940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12331940 is an abundant number, since it is smaller than the sum of its proper divisors (13565176).

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

12331940 is a wasteful number, since it uses less digits than its factorization.

12331940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616606 (or 616604 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 12331940 is about 3511.6862046601. The cubic root of 12331940 is about 231.0346580682.

The spelling of 12331940 in words is "twelve million, three hundred thirty-one thousand, nine hundred forty".