11255831 has 2 divisors, whose sum is σ = 11255832. Its totient is φ = 11255830.

The previous prime is 11255813. The next prime is 11255837. The reversal of 11255831 is 13855211.

It is a happy number.

Together with previous prime (11255813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (13855211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11255831 - 2¹⁴ = 11239447 is a prime.

It is a super-2 number, since 2×11255831² = 253387463001122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11255831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11255837) 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, 5627915 + 5627916.

It is an arithmetic number, because the mean of its divisors is an integer number (5627916).

Almost surely, 2^11255831 is an apocalyptic number.

11255831 is a deficient number, since it is larger than the sum of its proper divisors (1).

11255831 is an equidigital number, since it uses as much as digits as its factorization.

11255831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 26.

The square root of 11255831 is about 3354.9710878039. The cubic root of 11255831 is about 224.1089433393.

The spelling of 11255831 in words is "eleven million, two hundred fifty-five thousand, eight hundred thirty-one".