33243943 has 2 divisors, whose sum is σ = 33243944. Its totient is φ = 33243942.

The previous prime is 33243919. The next prime is 33243949. The reversal of 33243943 is 34934233.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33243943 is a prime.

It is a super-2 number, since 2×33243943² = 2210319492374498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33243949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16621971 + 16621972.

It is an arithmetic number, because the mean of its divisors is an integer number (16621972).

Almost surely, 2^33243943 is an apocalyptic number.

33243943 is a deficient number, since it is larger than the sum of its proper divisors (1).

33243943 is an equidigital number, since it uses as much as digits as its factorization.

33243943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 31.

The square root of 33243943 is about 5765.7560649060. The cubic root of 33243943 is about 321.5418525960.

The spelling of 33243943 in words is "thirty-three million, two hundred forty-three thousand, nine hundred forty-three".