213972259 has 2 divisors, whose sum is σ = 213972260. Its totient is φ = 213972258.

The previous prime is 213972233. The next prime is 213972263. The reversal of 213972259 is 952279312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213972259 - 2⁷ = 213972131 is a prime.

It is not a weakly prime, because it can be changed into another prime (213975259) 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, 106986129 + 106986130.

It is an arithmetic number, because the mean of its divisors is an integer number (106986130).

Almost surely, 2^213972259 is an apocalyptic number.

213972259 is a deficient number, since it is larger than the sum of its proper divisors (1).

213972259 is an equidigital number, since it uses as much as digits as its factorization.

213972259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 40.

The square root of 213972259 is about 14627.7906397378. The cubic root of 213972259 is about 598.1165559543.

The spelling of 213972259 in words is "two hundred thirteen million, nine hundred seventy-two thousand, two hundred fifty-nine".