12931466 has 4 divisors (see below), whose sum is σ = 19397202. Its totient is φ = 6465732.

The previous prime is 12931459. The next prime is 12931487. The reversal of 12931466 is 66413921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66413921 = 7 ⋅9487703.

It can be written as a sum of positive squares in only one way, i.e., 6786025 + 6145441 = 2605^2 + 2479^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3232865 + ... + 3232868.

Almost surely, 2^12931466 is an apocalyptic number.

12931466 is a deficient number, since it is larger than the sum of its proper divisors (6465736).

12931466 is an equidigital number, since it uses as much as digits as its factorization.

12931466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6465735.

The product of its digits is 7776, while the sum is 32.

The square root of 12931466 is about 3596.0347606774. The cubic root of 12931466 is about 234.7195447120.

The spelling of 12931466 in words is "twelve million, nine hundred thirty-one thousand, four hundred sixty-six".