213474691 has 2 divisors, whose sum is σ = 213474692. Its totient is φ = 213474690.

The previous prime is 213474689. The next prime is 213474697. The reversal of 213474691 is 196474312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213474691 - 2¹ = 213474689 is a prime.

Together with 213474689, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213474691.

It is not a weakly prime, because it can be changed into another prime (213474697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106737345 + 106737346.

It is an arithmetic number, because the mean of its divisors is an integer number (106737346).

Almost surely, 2^213474691 is an apocalyptic number.

213474691 is a deficient number, since it is larger than the sum of its proper divisors (1).

213474691 is an equidigital number, since it uses as much as digits as its factorization.

213474691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 213474691 is about 14610.7731143838. The cubic root of 213474691 is about 597.6525789268.

The spelling of 213474691 in words is "two hundred thirteen million, four hundred seventy-four thousand, six hundred ninety-one".