1115887723 has 4 divisors (see below), whose sum is σ = 1154366640. Its totient is φ = 1077408808.

The previous prime is 1115887657. The next prime is 1115887739. The reversal of 1115887723 is 3277885111.

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 1115887723 - 2¹⁷ = 1115756651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1115887723.

It is not an unprimeable number, because it can be changed into a prime (1115887753) 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, 19239415 + ... + 19239472.

It is an arithmetic number, because the mean of its divisors is an integer number (288591660).

Almost surely, 2^1115887723 is an apocalyptic number.

1115887723 is a deficient number, since it is larger than the sum of its proper divisors (38478917).

1115887723 is an equidigital number, since it uses as much as digits as its factorization.

1115887723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38478916.

The product of its digits is 94080, while the sum is 43.

The square root of 1115887723 is about 33404.9056726703. The cubic root of 1115887723 is about 1037.2262512488.

The spelling of 1115887723 in words is "one billion, one hundred fifteen million, eight hundred eighty-seven thousand, seven hundred twenty-three".