12302131 has 4 divisors (see below), whose sum is σ = 12319264. Its totient is φ = 12285000.

The previous prime is 12302089. The next prime is 12302141. The reversal of 12302131 is 13120321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12302131 - 2²¹ = 10204979 is a prime.

It is a super-2 number, since 2×12302131² = 302684854282322, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12302141) 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, 7440 + ... + 8941.

It is an arithmetic number, because the mean of its divisors is an integer number (3079816).

Almost surely, 2^12302131 is an apocalyptic number.

12302131 is a deficient number, since it is larger than the sum of its proper divisors (17133).

12302131 is an equidigital number, since it uses as much as digits as its factorization.

12302131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17132.

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

The square root of 12302131 is about 3507.4393793764. The cubic root of 12302131 is about 230.8483540846.

Adding to 12302131 its reverse (13120321), we get a palindrome (25422452).

The spelling of 12302131 in words is "twelve million, three hundred two thousand, one hundred thirty-one".