213406867 has 2 divisors, whose sum is σ = 213406868. Its totient is φ = 213406866.

The previous prime is 213406847. The next prime is 213406871. The reversal of 213406867 is 768604312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213406867 is a prime.

It is not a weakly prime, because it can be changed into another prime (213406847) 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, 106703433 + 106703434.

It is an arithmetic number, because the mean of its divisors is an integer number (106703434).

Almost surely, 2^213406867 is an apocalyptic number.

213406867 is a deficient number, since it is larger than the sum of its proper divisors (1).

213406867 is an equidigital number, since it uses as much as digits as its factorization.

213406867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 213406867 is about 14608.4519029225. The cubic root of 213406867 is about 597.5892779301.

The spelling of 213406867 in words is "two hundred thirteen million, four hundred six thousand, eight hundred sixty-seven".