11771731 has 2 divisors, whose sum is σ = 11771732. Its totient is φ = 11771730.

The previous prime is 11771713. The next prime is 11771737. The reversal of 11771731 is 13717711.

Together with previous prime (11771713) 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 11771731 - 2⁷ = 11771603 is a prime.

It is a super-2 number, since 2×11771731² = 277147301472722, 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 11771731.

It is not a weakly prime, because it can be changed into another prime (11771737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5885865 + 5885866.

It is an arithmetic number, because the mean of its divisors is an integer number (5885866).

Almost surely, 2^11771731 is an apocalyptic number.

11771731 is a deficient number, since it is larger than the sum of its proper divisors (1).

11771731 is an equidigital number, since it uses as much as digits as its factorization.

11771731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1029, while the sum is 28.

The square root of 11771731 is about 3430.9956280940. The cubic root of 11771731 is about 227.4818630632.

The spelling of 11771731 in words is "eleven million, seven hundred seventy-one thousand, seven hundred thirty-one".