11959231 has 2 divisors, whose sum is σ = 11959232. Its totient is φ = 11959230.

The previous prime is 11959219. The next prime is 11959243. The reversal of 11959231 is 13295911.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (11959219) and next prime (11959243).

It is an emirp because it is prime and its reverse (13295911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11959231 - 2²¹ = 9862079 is a prime.

It is a super-2 number, since 2×11959231² = 286046412222722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11959193 and 11959202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11959201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5979615 + 5979616.

It is an arithmetic number, because the mean of its divisors is an integer number (5979616).

Almost surely, 2^11959231 is an apocalyptic number.

11959231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11959231 is an equidigital number, since it uses as much as digits as its factorization.

11959231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2430, while the sum is 31.

The square root of 11959231 is about 3458.2121103252. The cubic root of 11959231 is about 228.6832829211.

The spelling of 11959231 in words is "eleven million, nine hundred fifty-nine thousand, two hundred thirty-one".