12320131 has 4 divisors (see below), whose sum is σ = 12620664. Its totient is φ = 12019600.

The previous prime is 12320123. The next prime is 12320141. The reversal of 12320131 is 13102321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13102321 = 103 ⋅127207.

It is a cyclic number.

It is not a de Polignac number, because 12320131 - 2³ = 12320123 is a prime.

It is a super-2 number, since 2×12320131² = 303571255714322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12320141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150205 + ... + 150286.

It is an arithmetic number, because the mean of its divisors is an integer number (3155166).

Almost surely, 2^12320131 is an apocalyptic number.

12320131 is a deficient number, since it is larger than the sum of its proper divisors (300533).

12320131 is an equidigital number, since it uses as much as digits as its factorization.

12320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300532.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 12320131 is about 3510.0044159516. The cubic root of 12320131 is about 230.9608886639.

Adding to 12320131 its reverse (13102321), we get a palindrome (25422452).

The spelling of 12320131 in words is "twelve million, three hundred twenty thousand, one hundred thirty-one".