12531435 has 32 divisors (see below), whose sum is σ = 23915520. Its totient is φ = 5478528.

The previous prime is 12531391. The next prime is 12531437. The reversal of 12531435 is 53413521.

It is not a de Polignac number, because 12531435 - 2⁷ = 12531307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12531437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180 + ... + 5009.

It is an arithmetic number, because the mean of its divisors is an integer number (747360).

Almost surely, 2^12531435 is an apocalyptic number.

12531435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12531435 is a deficient number, since it is larger than the sum of its proper divisors (11384085).

12531435 is a wasteful number, since it uses less digits than its factorization.

12531435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5227.

The product of its digits is 1800, while the sum is 24.

The square root of 12531435 is about 3539.9766948385. The cubic root of 12531435 is about 232.2738232879.

Adding to 12531435 its reverse (53413521), we get a palindrome (65944956).

The spelling of 12531435 in words is "twelve million, five hundred thirty-one thousand, four hundred thirty-five".