213293687 has 2 divisors, whose sum is σ = 213293688. Its totient is φ = 213293686.

The previous prime is 213293683. The next prime is 213293699. The reversal of 213293687 is 786392312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213293687 - 2² = 213293683 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213293683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106646843 + 106646844.

It is an arithmetic number, because the mean of its divisors is an integer number (106646844).

Almost surely, 2^213293687 is an apocalyptic number.

213293687 is a deficient number, since it is larger than the sum of its proper divisors (1).

213293687 is an equidigital number, since it uses as much as digits as its factorization.

213293687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 213293687 is about 14604.5776042993. The cubic root of 213293687 is about 597.4836157339.

The spelling of 213293687 in words is "two hundred thirteen million, two hundred ninety-three thousand, six hundred eighty-seven".