100723 has 4 divisors (see below), whose sum is σ = 115120. Its totient is φ = 86328.

The previous prime is 100703. The next prime is 100733. The reversal of 100723 is 327001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100723 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100703) 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, 7188 + ... + 7201.

It is an arithmetic number, because the mean of its divisors is an integer number (28780).

2¹⁰⁰⁷²³ is an apocalyptic number.

100723 is a deficient number, since it is larger than the sum of its proper divisors (14397).

100723 is an equidigital number, since it uses as much as digits as its factorization.

100723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14396.

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 100723 is about 317.3688705592. The cubic root of 100723 is about 46.5274821166.

Adding to 100723 its reverse (327001), we get a palindrome (427724).

The spelling of 100723 in words is "one hundred thousand, seven hundred twenty-three", and thus it is an iban number.