213533407 has 2 divisors, whose sum is σ = 213533408. Its totient is φ = 213533406.

The previous prime is 213533393. The next prime is 213533417. The reversal of 213533407 is 704335312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213533407 - 2⁷ = 213533279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213533417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106766703 + 106766704.

It is an arithmetic number, because the mean of its divisors is an integer number (106766704).

Almost surely, 2^213533407 is an apocalyptic number.

213533407 is a deficient number, since it is larger than the sum of its proper divisors (1).

213533407 is an equidigital number, since it uses as much as digits as its factorization.

213533407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 213533407 is about 14612.7823154935. The cubic root of 213533407 is about 597.7073684850.

Adding to 213533407 its reverse (704335312), we get a palindrome (917868719).

The spelling of 213533407 in words is "two hundred thirteen million, five hundred thirty-three thousand, four hundred seven".