73033231 has 4 divisors (see below), whose sum is σ = 73305000. Its totient is φ = 72761464.

The previous prime is 73033217. The next prime is 73033237. The reversal of 73033231 is 13233037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13233037 = 41 ⋅322757.

It is a cyclic number.

It is not a de Polignac number, because 73033231 - 2⁹ = 73032719 is a prime.

It is a super-2 number, since 2×73033231² = 10667705660598722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73033237) 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, 135481 + ... + 136018.

It is an arithmetic number, because the mean of its divisors is an integer number (18326250).

Almost surely, 2^73033231 is an apocalyptic number.

73033231 is a deficient number, since it is larger than the sum of its proper divisors (271769).

73033231 is a wasteful number, since it uses less digits than its factorization.

73033231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271768.

The product of its (nonzero) digits is 1134, while the sum is 22.

The square root of 73033231 is about 8545.9482212333. The cubic root of 73033231 is about 417.9973271961.

Adding to 73033231 its reverse (13233037), we get a palindrome (86266268).

The spelling of 73033231 in words is "seventy-three million, thirty-three thousand, two hundred thirty-one".