11944531 has 2 divisors, whose sum is σ = 11944532. Its totient is φ = 11944530.

The previous prime is 11944529. The next prime is 11944561. The reversal of 11944531 is 13544911.

It is a weak prime.

It is an emirp because it is prime and its reverse (13544911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11944531 - 2¹ = 11944529 is a prime.

It is a super-2 number, since 2×11944531² = 285343641619922, which contains 22 as substring.

Together with 11944529, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11944531.

It is not a weakly prime, because it can be changed into another prime (11944501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5972265 + 5972266.

It is an arithmetic number, because the mean of its divisors is an integer number (5972266).

Almost surely, 2^11944531 is an apocalyptic number.

11944531 is a deficient number, since it is larger than the sum of its proper divisors (1).

11944531 is an equidigital number, since it uses as much as digits as its factorization.

11944531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 28.

The square root of 11944531 is about 3456.0860811039. The cubic root of 11944531 is about 228.5895471686.

The spelling of 11944531 in words is "eleven million, nine hundred forty-four thousand, five hundred thirty-one".