12478031 has 2 divisors, whose sum is σ = 12478032. Its totient is φ = 12478030.

The previous prime is 12478009. The next prime is 12478043. The reversal of 12478031 is 13087421.

It is a strong prime.

It is an emirp because it is prime and its reverse (13087421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12478031 - 2¹⁰ = 12477007 is a prime.

It is a super-2 number, since 2×12478031² = 311402515273922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12478001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6239015 + 6239016.

It is an arithmetic number, because the mean of its divisors is an integer number (6239016).

Almost surely, 2^12478031 is an apocalyptic number.

12478031 is a deficient number, since it is larger than the sum of its proper divisors (1).

12478031 is an equidigital number, since it uses as much as digits as its factorization.

12478031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 12478031 is about 3532.4256538532. The cubic root of 12478031 is about 231.9434005310.

The spelling of 12478031 in words is "twelve million, four hundred seventy-eight thousand, thirty-one".