11531479 has 2 divisors, whose sum is σ = 11531480. Its totient is φ = 11531478.

The previous prime is 11531477. The next prime is 11531503. The reversal of 11531479 is 97413511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11531479 - 2¹ = 11531477 is a prime.

Together with 11531477, 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 11531479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11531477) 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 as a sum of consecutive naturals, namely, 5765739 + 5765740.

It is an arithmetic number, because the mean of its divisors is an integer number (5765740).

Almost surely, 2^11531479 is an apocalyptic number.

11531479 is a deficient number, since it is larger than the sum of its proper divisors (1).

11531479 is an equidigital number, since it uses as much as digits as its factorization.

11531479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 31.

The square root of 11531479 is about 3395.8031450601. The cubic root of 11531479 is about 225.9236369777.

The spelling of 11531479 in words is "eleven million, five hundred thirty-one thousand, four hundred seventy-nine".