12431845 has 16 divisors (see below), whose sum is σ = 16485120. Its totient is φ = 8952064.

The previous prime is 12431843. The next prime is 12431849. The reversal of 12431845 is 54813421.

12431845 = T₃₀ + T₃₁ + ... + T₄₂₀.

It is not a de Polignac number, because 12431845 - 2¹ = 12431843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12431843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1225 + ... + 5134.

It is an arithmetic number, because the mean of its divisors is an integer number (1030320).

Almost surely, 2^12431845 is an apocalyptic number.

It is an amenable number.

12431845 is a deficient number, since it is larger than the sum of its proper divisors (4053275).

12431845 is a wasteful number, since it uses less digits than its factorization.

12431845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6404.

The product of its digits is 3840, while the sum is 28.

The square root of 12431845 is about 3525.8821591199. The cubic root of 12431845 is about 231.6568760994.

The spelling of 12431845 in words is "twelve million, four hundred thirty-one thousand, eight hundred forty-five".