12533831 has 2 divisors, whose sum is σ = 12533832. Its totient is φ = 12533830.

The previous prime is 12533779. The next prime is 12533839. The reversal of 12533831 is 13833521.

12533831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12533831 is a prime.

It is a super-2 number, since 2×12533831² = 314193839073122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12533831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12533839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6266915 + 6266916.

It is an arithmetic number, because the mean of its divisors is an integer number (6266916).

Almost surely, 2^12533831 is an apocalyptic number.

12533831 is a deficient number, since it is larger than the sum of its proper divisors (1).

12533831 is an equidigital number, since it uses as much as digits as its factorization.

12533831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 12533831 is about 3540.3150989707. The cubic root of 12533831 is about 232.2886258655.

The spelling of 12533831 in words is "twelve million, five hundred thirty-three thousand, eight hundred thirty-one".