213925633 has 2 divisors, whose sum is σ = 213925634. Its totient is φ = 213925632.

The previous prime is 213925583. The next prime is 213925669. The reversal of 213925633 is 336529312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113465104 + 100460529 = 10652^2 + 10023^2 .

It is a cyclic number.

It is not a de Polignac number, because 213925633 - 2⁹ = 213925121 is a prime.

It is not a weakly prime, because it can be changed into another prime (213925133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106962816 + 106962817.

It is an arithmetic number, because the mean of its divisors is an integer number (106962817).

Almost surely, 2^213925633 is an apocalyptic number.

It is an amenable number.

213925633 is a deficient number, since it is larger than the sum of its proper divisors (1).

213925633 is an equidigital number, since it uses as much as digits as its factorization.

213925633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 34.

The square root of 213925633 is about 14626.1968057318. The cubic root of 213925633 is about 598.0731082529.

It can be divided in two parts, 2139 and 25633, that added together give a palindrome (27772).

The spelling of 213925633 in words is "two hundred thirteen million, nine hundred twenty-five thousand, six hundred thirty-three".