11742731 has 16 divisors (see below), whose sum is σ = 15767808. Its totient is φ = 8445600.

The previous prime is 11742713. The next prime is 11742751. The reversal of 11742731 is 13724711.

It is a happy number.

11742731 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11742731 - 2⁶ = 11742667 is a prime.

It is a super-2 number, since 2×11742731² = 275783462676722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

11742731 is strictly pandigital in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 11742731.

It is not an unprimeable number, because it can be changed into a prime (11742751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4865 + ... + 6866.

It is an arithmetic number, because the mean of its divisors is an integer number (985488).

Almost surely, 2^11742731 is an apocalyptic number.

11742731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11742731 is a deficient number, since it is larger than the sum of its proper divisors (4025077).

11742731 is a wasteful number, since it uses less digits than its factorization.

11742731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11762.

The product of its digits is 1176, while the sum is 26.

The square root of 11742731 is about 3426.7668435422. The cubic root of 11742731 is about 227.2949067373.

The spelling of 11742731 in words is "eleven million, seven hundred forty-two thousand, seven hundred thirty-one".