11531669 has 2 divisors, whose sum is σ = 11531670. Its totient is φ = 11531668.

The previous prime is 11531621. The next prime is 11531683. The reversal of 11531669 is 96613511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9394225 + 2137444 = 3065^2 + 1462^2 .

It is an emirp because it is prime and its reverse (96613511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11531669 - 2⁸ = 11531413 is a prime.

It is a super-2 number, since 2×11531669² = 265958779851122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11531699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5765834 + 5765835.

It is an arithmetic number, because the mean of its divisors is an integer number (5765835).

Almost surely, 2^11531669 is an apocalyptic number.

It is an amenable number.

11531669 is a deficient number, since it is larger than the sum of its proper divisors (1).

11531669 is an equidigital number, since it uses as much as digits as its factorization.

11531669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 32.

The square root of 11531669 is about 3395.8311206537. The cubic root of 11531669 is about 225.9248777915.

The spelling of 11531669 in words is "eleven million, five hundred thirty-one thousand, six hundred sixty-nine".