11827831 has 2 divisors, whose sum is σ = 11827832. Its totient is φ = 11827830.

The previous prime is 11827813. The next prime is 11827841. The reversal of 11827831 is 13872811.

It is a happy number.

Together with previous prime (11827813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11827831 - 2⁷ = 11827703 is a prime.

It is a super-2 number, since 2×11827831² = 279795172329122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11827793 and 11827802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11827811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5913915 + 5913916.

It is an arithmetic number, because the mean of its divisors is an integer number (5913916).

Almost surely, 2^11827831 is an apocalyptic number.

11827831 is a deficient number, since it is larger than the sum of its proper divisors (1).

11827831 is an equidigital number, since it uses as much as digits as its factorization.

11827831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 31.

The square root of 11827831 is about 3439.1613803368. The cubic root of 11827831 is about 227.8426571655.

The spelling of 11827831 in words is "eleven million, eight hundred twenty-seven thousand, eight hundred thirty-one".