11388723 has 4 divisors (see below), whose sum is σ = 15184968. Its totient is φ = 7592480.

The previous prime is 11388721. The next prime is 11388743. The reversal of 11388723 is 32788311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32788311 = 3 ⋅10929437.

It is a cyclic number.

It is not a de Polignac number, because 11388723 - 2¹ = 11388721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11388721) 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, 1898118 + ... + 1898123.

It is an arithmetic number, because the mean of its divisors is an integer number (3796242).

Almost surely, 2^11388723 is an apocalyptic number.

11388723 is a deficient number, since it is larger than the sum of its proper divisors (3796245).

11388723 is an equidigital number, since it uses as much as digits as its factorization.

11388723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3796244.

The product of its digits is 8064, while the sum is 33.

The square root of 11388723 is about 3374.7182104585. The cubic root of 11388723 is about 224.9874758461.

The spelling of 11388723 in words is "eleven million, three hundred eighty-eight thousand, seven hundred twenty-three".