11745831 has 4 divisors (see below), whose sum is σ = 15661112. Its totient is φ = 7830552.

The previous prime is 11745823. The next prime is 11745859. The reversal of 11745831 is 13854711.

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

It is not a de Polignac number, because 11745831 - 2³ = 11745823 is a prime.

It is a super-2 number, since 2×11745831² = 275929091761122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11745821) 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 in 3 ways as a sum of consecutive naturals, for example, 1957636 + ... + 1957641.

It is an arithmetic number, because the mean of its divisors is an integer number (3915278).

Almost surely, 2^11745831 is an apocalyptic number.

11745831 is a deficient number, since it is larger than the sum of its proper divisors (3915281).

11745831 is an equidigital number, since it uses as much as digits as its factorization.

11745831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3915280.

The product of its digits is 3360, while the sum is 30.

The square root of 11745831 is about 3427.2191351006. The cubic root of 11745831 is about 227.3149064067.

The spelling of 11745831 in words is "eleven million, seven hundred forty-five thousand, eight hundred thirty-one".