12359531 has 2 divisors, whose sum is σ = 12359532. Its totient is φ = 12359530.

The previous prime is 12359521. The next prime is 12359551. The reversal of 12359531 is 13595321.

It is a weak prime.

It is an emirp because it is prime and its reverse (13595321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12359531 is a prime.

It is a super-2 number, since 2×12359531² = 305516013079922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 12359494 and 12359503.

It is not a weakly prime, because it can be changed into another prime (12359521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6179765 + 6179766.

It is an arithmetic number, because the mean of its divisors is an integer number (6179766).

Almost surely, 2^12359531 is an apocalyptic number.

12359531 is a deficient number, since it is larger than the sum of its proper divisors (1).

12359531 is an equidigital number, since it uses as much as digits as its factorization.

12359531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4050, while the sum is 29.

The square root of 12359531 is about 3515.6124644221. The cubic root of 12359531 is about 231.2068323612.

It can be divided in two parts, 1 and 2359531, that added together give a palindrome (2359532).

The spelling of 12359531 in words is "twelve million, three hundred fifty-nine thousand, five hundred thirty-one".