12407331 has 16 divisors (see below), whose sum is σ = 18122400. Its totient is φ = 7515648.

The previous prime is 12407309. The next prime is 12407333. The reversal of 12407331 is 13370421.

12407331 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12407331 - 2⁷ = 12407203 is a prime.

It is a super-2 number, since 2×12407331² = 307883725087122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12407298 and 12407307.

It is not an unprimeable number, because it can be changed into a prime (12407333) 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, 2716 + ... + 5673.

It is an arithmetic number, because the mean of its divisors is an integer number (1132650).

Almost surely, 2^12407331 is an apocalyptic number.

12407331 is a deficient number, since it is larger than the sum of its proper divisors (5715069).

12407331 is a wasteful number, since it uses less digits than its factorization.

12407331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8438.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 12407331 is about 3522.4041505767. The cubic root of 12407331 is about 231.5045100481.

Adding to 12407331 its reverse (13370421), we get a palindrome (25777752).

The spelling of 12407331 in words is "twelve million, four hundred seven thousand, three hundred thirty-one".