213803743 has 2 divisors, whose sum is σ = 213803744. Its totient is φ = 213803742.

The previous prime is 213803731. The next prime is 213803753. The reversal of 213803743 is 347308312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213803743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213803753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106901871 + 106901872.

It is an arithmetic number, because the mean of its divisors is an integer number (106901872).

Almost surely, 2^213803743 is an apocalyptic number.

213803743 is a deficient number, since it is larger than the sum of its proper divisors (1).

213803743 is an equidigital number, since it uses as much as digits as its factorization.

213803743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 213803743 is about 14622.0293735172. The cubic root of 213803743 is about 597.9594971505.

The spelling of 213803743 in words is "two hundred thirteen million, eight hundred three thousand, seven hundred forty-three".