213254567 has 2 divisors, whose sum is σ = 213254568. Its totient is φ = 213254566.

The previous prime is 213254539. The next prime is 213254581. The reversal of 213254567 is 765452312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213254567 - 2⁸ = 213254311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213251567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106627283 + 106627284.

It is an arithmetic number, because the mean of its divisors is an integer number (106627284).

Almost surely, 2^213254567 is an apocalyptic number.

213254567 is a deficient number, since it is larger than the sum of its proper divisors (1).

213254567 is an equidigital number, since it uses as much as digits as its factorization.

213254567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 35.

The square root of 213254567 is about 14603.2382367747. The cubic root of 213254567 is about 597.4470855260.

The spelling of 213254567 in words is "two hundred thirteen million, two hundred fifty-four thousand, five hundred sixty-seven".