71903233 has 2 divisors, whose sum is σ = 71903234. Its totient is φ = 71903232.

The previous prime is 71903231. The next prime is 71903243. The reversal of 71903233 is 33230917.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71098624 + 804609 = 8432^2 + 897^2 .

It is an emirp because it is prime and its reverse (33230917) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71903233 - 2¹ = 71903231 is a prime.

Together with 71903231, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (71903231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35951616 + 35951617.

It is an arithmetic number, because the mean of its divisors is an integer number (35951617).

Almost surely, 2^71903233 is an apocalyptic number.

It is an amenable number.

71903233 is a deficient number, since it is larger than the sum of its proper divisors (1).

71903233 is an equidigital number, since it uses as much as digits as its factorization.

71903233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 71903233 is about 8479.5774069231. The cubic root of 71903233 is about 415.8303074689.

The spelling of 71903233 in words is "seventy-one million, nine hundred three thousand, two hundred thirty-three".