210000023 has 2 divisors, whose sum is σ = 210000024. Its totient is φ = 210000022.

The previous prime is 210000017. The next prime is 210000047. The reversal of 210000023 is 320000012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210000023 - 2⁸ = 209999767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210000523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105000011 + 105000012.

It is an arithmetic number, because the mean of its divisors is an integer number (105000012).

Almost surely, 2^210000023 is an apocalyptic number.

210000023 is a deficient number, since it is larger than the sum of its proper divisors (1).

210000023 is an equidigital number, since it uses as much as digits as its factorization.

210000023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 210000023 is about 14491.3775397648. The cubic root of 210000023 is about 594.3922169763.

Adding to 210000023 its reverse (320000012), we get a palindrome (530000035).

The spelling of 210000023 in words is "two hundred ten million, twenty-three", and thus it is an aban number.