153823 has 4 divisors (see below), whose sum is σ = 155448. Its totient is φ = 152200.

The previous prime is 153817. The next prime is 153841. The reversal of 153823 is 328351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 328351 = 101 ⋅3251.

It is a cyclic number.

It is not a de Polignac number, because 153823 - 2¹⁷ = 22751 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 153794 and 153803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 661 + ... + 862.

It is an arithmetic number, because the mean of its divisors is an integer number (38862).

2¹⁵³⁸²³ is an apocalyptic number.

153823 is a deficient number, since it is larger than the sum of its proper divisors (1625).

153823 is a wasteful number, since it uses less digits than its factorization.

153823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624.

The product of its digits is 720, while the sum is 22.

The square root of 153823 is about 392.2027536874. The cubic root of 153823 is about 53.5805407569.

It can be divided in two parts, 1 and 53823, that added together give a square (53824 = 232²).

The spelling of 153823 in words is "one hundred fifty-three thousand, eight hundred twenty-three".