12931473 has 4 divisors (see below), whose sum is σ = 17241968. Its totient is φ = 8620980.

The previous prime is 12931459. The next prime is 12931487. The reversal of 12931473 is 37413921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37413921 = 3 ⋅12471307.

It is an interprime number because it is at equal distance from previous prime (12931459) and next prime (12931487).

It is not a de Polignac number, because 12931473 - 2⁶ = 12931409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12931473.

It is not an unprimeable number, because it can be changed into a prime (12931423) 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, 2155243 + ... + 2155248.

It is an arithmetic number, because the mean of its divisors is an integer number (4310492).

Almost surely, 2^12931473 is an apocalyptic number.

It is an amenable number.

12931473 is a deficient number, since it is larger than the sum of its proper divisors (4310495).

12931473 is an equidigital number, since it uses as much as digits as its factorization.

12931473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4310494.

The product of its digits is 4536, while the sum is 30.

The square root of 12931473 is about 3596.0357339715. The cubic root of 12931473 is about 234.7195870644.

The spelling of 12931473 in words is "twelve million, nine hundred thirty-one thousand, four hundred seventy-three".