213640367 has 2 divisors, whose sum is σ = 213640368. Its totient is φ = 213640366.

The previous prime is 213640337. The next prime is 213640397. The reversal of 213640367 is 763046312.

It is a balanced prime because it is at equal distance from previous prime (213640337) and next prime (213640397).

It is a cyclic number.

It is not a de Polignac number, because 213640367 - 2⁸ = 213640111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213640337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106820183 + 106820184.

It is an arithmetic number, because the mean of its divisors is an integer number (106820184).

Almost surely, 2^213640367 is an apocalyptic number.

213640367 is a deficient number, since it is larger than the sum of its proper divisors (1).

213640367 is an equidigital number, since it uses as much as digits as its factorization.

213640367 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 213640367 is about 14616.4416668353. The cubic root of 213640367 is about 597.8071500751.

Adding to 213640367 its reverse (763046312), we get a palindrome (976686679).

The spelling of 213640367 in words is "two hundred thirteen million, six hundred forty thousand, three hundred sixty-seven".