12124431 has 16 divisors (see below), whose sum is σ = 19595520. Its totient is φ = 7347960.

The previous prime is 12124423. The next prime is 12124481. The reversal of 12124431 is 13442121.

It is not a de Polignac number, because 12124431 - 2³ = 12124423 is a prime.

It is a super-2 number, since 2×12124431² = 294003654147522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12124481) 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, 20115 + ... + 20708.

It is an arithmetic number, because the mean of its divisors is an integer number (1224720).

Almost surely, 2^12124431 is an apocalyptic number.

12124431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12124431 is a deficient number, since it is larger than the sum of its proper divisors (7471089).

12124431 is a wasteful number, since it uses less digits than its factorization.

12124431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40843 (or 40837 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 12124431 is about 3482.0153646990. The cubic root of 12124431 is about 229.7314508980.

Adding to 12124431 its reverse (13442121), we get a palindrome (25566552).

The spelling of 12124431 in words is "twelve million, one hundred twenty-four thousand, four hundred thirty-one".