12210431 has 4 divisors (see below), whose sum is σ = 12410664. Its totient is φ = 12010200.

The previous prime is 12210389. The next prime is 12210449. The reversal of 12210431 is 13401221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13401221 = 271 ⋅49451.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12210431 is a prime.

It is a super-2 number, since 2×12210431² = 298189250411522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210461) 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, 100025 + ... + 100146.

It is an arithmetic number, because the mean of its divisors is an integer number (3102666).

Almost surely, 2^12210431 is an apocalyptic number.

12210431 is a deficient number, since it is larger than the sum of its proper divisors (200233).

12210431 is an equidigital number, since it uses as much as digits as its factorization.

12210431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200232.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 12210431 is about 3494.3427135872. The cubic root of 12210431 is about 230.2733423158.

Adding to 12210431 its reverse (13401221), we get a palindrome (25611652).

The spelling of 12210431 in words is "twelve million, two hundred ten thousand, four hundred thirty-one".