202823 has 2 divisors, whose sum is σ = 202824. Its totient is φ = 202822.

The previous prime is 202817. The next prime is 202841. The reversal of 202823 is 328202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202823 - 2⁸ = 202567 is a prime.

It is a super-2 number, since 2×202823² = 82274338658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101411 + 101412.

It is an arithmetic number, because the mean of its divisors is an integer number (101412).

2²⁰²⁸²³ is an apocalyptic number.

202823 is a deficient number, since it is larger than the sum of its proper divisors (1).

202823 is an equidigital number, since it uses as much as digits as its factorization.

202823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 202823 is about 450.3587458904. The cubic root of 202823 is about 58.7542203095.

The spelling of 202823 in words is "two hundred two thousand, eight hundred twenty-three".