153723 has 4 divisors (see below), whose sum is σ = 204968. Its totient is φ = 102480.

The previous prime is 153719. The next prime is 153733. The reversal of 153723 is 327351.

It is a happy number.

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

It is not a de Polignac number, because 153723 - 2² = 153719 is a prime.

It is a D-number.

It is a Duffinian number.

153723 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 153723.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 153723.

It is not an unprimeable number, because it can be changed into a prime (153733) 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, 25618 + ... + 25623.

It is an arithmetic number, because the mean of its divisors is an integer number (51242).

2¹⁵³⁷²³ is an apocalyptic number.

153723 is a deficient number, since it is larger than the sum of its proper divisors (51245).

153723 is an equidigital number, since it uses as much as digits as its factorization.

153723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51244.

The product of its digits is 630, while the sum is 21.

The square root of 153723 is about 392.0752478798. The cubic root of 153723 is about 53.5689273753.

The spelling of 153723 in words is "one hundred fifty-three thousand, seven hundred twenty-three".