213090443 has 2 divisors, whose sum is σ = 213090444. Its totient is φ = 213090442.

The previous prime is 213090421. The next prime is 213090457. The reversal of 213090443 is 344090312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213090443 is a prime.

It is not a weakly prime, because it can be changed into another prime (213090343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106545221 + 106545222.

It is an arithmetic number, because the mean of its divisors is an integer number (106545222).

Almost surely, 2^213090443 is an apocalyptic number.

213090443 is a deficient number, since it is larger than the sum of its proper divisors (1).

213090443 is an equidigital number, since it uses as much as digits as its factorization.

213090443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 213090443 is about 14597.6177166002. The cubic root of 213090443 is about 597.2937780298.

The spelling of 213090443 in words is "two hundred thirteen million, ninety thousand, four hundred forty-three".