11057731 has 4 divisors (see below), whose sum is σ = 11414464. Its totient is φ = 10701000.

The previous prime is 11057713. The next prime is 11057743. The reversal of 11057731 is 13775011.

11057731 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11057731 - 2⁵ = 11057699 is a prime.

It is a super-2 number, since 2×11057731² = 244546829736722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11057696 and 11057705.

It is not an unprimeable number, because it can be changed into a prime (11052731) 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 in 3 ways as a sum of consecutive naturals, for example, 178320 + ... + 178381.

It is an arithmetic number, because the mean of its divisors is an integer number (2853616).

Almost surely, 2^11057731 is an apocalyptic number.

11057731 is a deficient number, since it is larger than the sum of its proper divisors (356733).

11057731 is an equidigital number, since it uses as much as digits as its factorization.

11057731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356732.

The product of its (nonzero) digits is 735, while the sum is 25.

The square root of 11057731 is about 3325.3166766490. The cubic root of 11057731 is about 222.7863988573.

It can be divided in two parts, 1105 and 7731, that added together give a square (8836 = 94²).

The spelling of 11057731 in words is "eleven million, fifty-seven thousand, seven hundred thirty-one".