20100023 has 2 divisors, whose sum is σ = 20100024. Its totient is φ = 20100022.

The previous prime is 20099983. The next prime is 20100053. The reversal of 20100023 is 32000102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20100023 - 2¹⁸ = 19837879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20100053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050011 + 10050012.

It is an arithmetic number, because the mean of its divisors is an integer number (10050012).

Almost surely, 2^20100023 is an apocalyptic number.

20100023 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100023 is an equidigital number, since it uses as much as digits as its factorization.

20100023 is an odious number, because the sum of its binary digits is odd.

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

The square root of 20100023 is about 4483.3049193647. The cubic root of 20100023 is about 271.8935163854.

Adding to 20100023 its reverse (32000102), we get a palindrome (52100125).

The spelling of 20100023 in words is "twenty million, one hundred thousand, twenty-three".