73003313 has 4 divisors (see below), whose sum is σ = 74380788. Its totient is φ = 71625840.

The previous prime is 73003309. The next prime is 73003319. The reversal of 73003313 is 31330037.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31330037 = 3877 ⋅8081.

It can be written as a sum of positive squares in 2 ways, for example, as 45050944 + 27952369 = 6712^2 + 5287^2 .

It is a cyclic number.

It is not a de Polignac number, because 73003313 - 2² = 73003309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73003319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688658 + ... + 688763.

It is an arithmetic number, because the mean of its divisors is an integer number (18595197).

Almost surely, 2^73003313 is an apocalyptic number.

It is an amenable number.

73003313 is a deficient number, since it is larger than the sum of its proper divisors (1377475).

73003313 is a wasteful number, since it uses less digits than its factorization.

73003313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377474.

The product of its (nonzero) digits is 567, while the sum is 20.

The square root of 73003313 is about 8544.1976217782. The cubic root of 73003313 is about 417.9402419857.

The spelling of 73003313 in words is "seventy-three million, three thousand, three hundred thirteen".