11585731 has 2 divisors, whose sum is σ = 11585732. Its totient is φ = 11585730.

The previous prime is 11585713. The next prime is 11585741. The reversal of 11585731 is 13758511.

Together with previous prime (11585713) 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 11585731 - 2⁷ = 11585603 is a prime.

It is a super-2 number, since 2×11585731² = 268458325608722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11585693 and 11585702.

It is not a weakly prime, because it can be changed into another prime (11585701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5792865 + 5792866.

It is an arithmetic number, because the mean of its divisors is an integer number (5792866).

Almost surely, 2^11585731 is an apocalyptic number.

11585731 is a deficient number, since it is larger than the sum of its proper divisors (1).

11585731 is an equidigital number, since it uses as much as digits as its factorization.

11585731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4200, while the sum is 31.

The square root of 11585731 is about 3403.7818672765. The cubic root of 11585731 is about 226.2773828054.

It can be divided in two parts, 1158 and 5731, that added together give a square (6889 = 83²).

The spelling of 11585731 in words is "eleven million, five hundred eighty-five thousand, seven hundred thirty-one".