12622431 has 4 divisors (see below), whose sum is σ = 16829912. Its totient is φ = 8414952.

The previous prime is 12622429. The next prime is 12622457. The reversal of 12622431 is 13422621.

12622431 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12622431 - 2¹ = 12622429 is a prime.

It is a super-2 number, since 2×12622431² = 318651528699522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12622398 and 12622407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12622471) 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, 2103736 + ... + 2103741.

It is an arithmetic number, because the mean of its divisors is an integer number (4207478).

Almost surely, 2^12622431 is an apocalyptic number.

12622431 is a deficient number, since it is larger than the sum of its proper divisors (4207481).

12622431 is an equidigital number, since it uses as much as digits as its factorization.

12622431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4207480.

The product of its digits is 576, while the sum is 21.

The square root of 12622431 is about 3552.8060740772. The cubic root of 12622431 is about 232.8346804476.

The spelling of 12622431 in words is "twelve million, six hundred twenty-two thousand, four hundred thirty-one".