213499967 has 2 divisors, whose sum is σ = 213499968. Its totient is φ = 213499966.

The previous prime is 213499963. The next prime is 213500003. The reversal of 213499967 is 769994312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213499967 - 2² = 213499963 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213499963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106749983 + 106749984.

It is an arithmetic number, because the mean of its divisors is an integer number (106749984).

Almost surely, 2^213499967 is an apocalyptic number.

213499967 is a deficient number, since it is larger than the sum of its proper divisors (1).

213499967 is an equidigital number, since it uses as much as digits as its factorization.

213499967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 50.

The square root of 213499967 is about 14611.6380669657. The cubic root of 213499967 is about 597.6761659078.

The spelling of 213499967 in words is "two hundred thirteen million, four hundred ninety-nine thousand, nine hundred sixty-seven".