213251023 has 2 divisors, whose sum is σ = 213251024. Its totient is φ = 213251022.

The previous prime is 213251011. The next prime is 213251033. The reversal of 213251023 is 320152312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213251023 - 2⁵ = 213250991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213251033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106625511 + 106625512.

It is an arithmetic number, because the mean of its divisors is an integer number (106625512).

Almost surely, 2^213251023 is an apocalyptic number.

213251023 is a deficient number, since it is larger than the sum of its proper divisors (1).

213251023 is an equidigital number, since it uses as much as digits as its factorization.

213251023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 213251023 is about 14603.1168933211. The cubic root of 213251023 is about 597.4437759225.

The spelling of 213251023 in words is "two hundred thirteen million, two hundred fifty-one thousand, twenty-three".