11823731 has 2 divisors, whose sum is σ = 11823732. Its totient is φ = 11823730.

The previous prime is 11823689. The next prime is 11823733. The reversal of 11823731 is 13732811.

It is a strong prime.

It is an emirp because it is prime and its reverse (13732811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11823731 is a prime.

It is a super-2 number, since 2×11823731² = 279601229520722, which contains 22 as substring.

Together with 11823733, it forms a pair of twin primes.

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 11823731.

It is not a weakly prime, because it can be changed into another prime (11823733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5911865 + 5911866.

It is an arithmetic number, because the mean of its divisors is an integer number (5911866).

Almost surely, 2^11823731 is an apocalyptic number.

11823731 is a deficient number, since it is larger than the sum of its proper divisors (1).

11823731 is an equidigital number, since it uses as much as digits as its factorization.

11823731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 26.

The square root of 11823731 is about 3438.5652531252. The cubic root of 11823731 is about 227.8163276591.

It can be divided in two parts, 1182 and 3731, that added together give a cube (4913 = 17³).

The spelling of 11823731 in words is "eleven million, eight hundred twenty-three thousand, seven hundred thirty-one".