103639723 has 4 divisors (see below), whose sum is σ = 113061528. Its totient is φ = 94217920.

The previous prime is 103639709. The next prime is 103639763. The reversal of 103639723 is 327936301.

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 103639723 - 2⁵ = 103639691 is a prime.

It is a super-3 number, since 3×103639723³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103639763) 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, 4710886 + ... + 4710907.

It is an arithmetic number, because the mean of its divisors is an integer number (28265382).

Almost surely, 2^103639723 is an apocalyptic number.

103639723 is a deficient number, since it is larger than the sum of its proper divisors (9421805).

103639723 is an equidigital number, since it uses as much as digits as its factorization.

103639723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9421804.

The product of its (nonzero) digits is 20412, while the sum is 34.

The square root of 103639723 is about 10180.3596694812. The cubic root of 103639723 is about 469.7232760659.

The spelling of 103639723 in words is "one hundred three million, six hundred thirty-nine thousand, seven hundred twenty-three".