12445431 has 8 divisors (see below), whose sum is σ = 17042544. Its totient is φ = 8072640.

The previous prime is 12445417. The next prime is 12445439. The reversal of 12445431 is 13454421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12445431 - 2¹⁰ = 12444407 is a prime.

It is a super-2 number, since 2×12445431² = 309777505551522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12445439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55950 + ... + 56171.

It is an arithmetic number, because the mean of its divisors is an integer number (2130318).

Almost surely, 2^12445431 is an apocalyptic number.

12445431 is a deficient number, since it is larger than the sum of its proper divisors (4597113).

12445431 is a wasteful number, since it uses less digits than its factorization.

12445431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112161.

The product of its digits is 1920, while the sum is 24.

The square root of 12445431 is about 3527.8082430881. The cubic root of 12445431 is about 231.7412332355.

Adding to 12445431 its reverse (13454421), we get a palindrome (25899852).

The spelling of 12445431 in words is "twelve million, four hundred forty-five thousand, four hundred thirty-one".