205451023 has 2 divisors, whose sum is σ = 205451024. Its totient is φ = 205451022.

The previous prime is 205451003. The next prime is 205451027. The reversal of 205451023 is 320154502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205451023 - 2⁵ = 205450991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205450985 and 205451003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205451027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102725511 + 102725512.

It is an arithmetic number, because the mean of its divisors is an integer number (102725512).

Almost surely, 2^205451023 is an apocalyptic number.

205451023 is a deficient number, since it is larger than the sum of its proper divisors (1).

205451023 is an equidigital number, since it uses as much as digits as its factorization.

205451023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 205451023 is about 14333.5628159924. The cubic root of 205451023 is about 590.0689596692.

The spelling of 205451023 in words is "two hundred five million, four hundred fifty-one thousand, twenty-three".