11681723 has 4 divisors (see below), whose sum is σ = 12189648. Its totient is φ = 11173800.

The previous prime is 11681717. The next prime is 11681729. The reversal of 11681723 is 32718611.

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

It is an interprime number because it is at equal distance from previous prime (11681717) and next prime (11681729).

It is a cyclic number.

It is not a de Polignac number, because 11681723 - 2¹⁸ = 11419579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11681729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253928 + ... + 253973.

It is an arithmetic number, because the mean of its divisors is an integer number (3047412).

Almost surely, 2^11681723 is an apocalyptic number.

11681723 is a deficient number, since it is larger than the sum of its proper divisors (507925).

11681723 is an equidigital number, since it uses as much as digits as its factorization.

11681723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507924.

The product of its digits is 2016, while the sum is 29.

The square root of 11681723 is about 3417.8535662020. The cubic root of 11681723 is about 226.9005949515.

The spelling of 11681723 in words is "eleven million, six hundred eighty-one thousand, seven hundred twenty-three".