73000231 has 4 divisors (see below), whose sum is σ = 73035432. Its totient is φ = 72965032.

The previous prime is 73000217. The next prime is 73000237. The reversal of 73000231 is 13200037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13200037 = 1181 ⋅11177.

It is a cyclic number.

It is not a de Polignac number, because 73000231 - 2⁵ = 73000199 is a prime.

It is a super-2 number, since 2×73000231² = 10658067452106722, which contains 22 as substring.

It is a Duffinian number.

73000231 is a modest number, since divided by 231 gives 73 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73000237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14281 + ... + 18706.

It is an arithmetic number, because the mean of its divisors is an integer number (18258858).

Almost surely, 2^73000231 is an apocalyptic number.

73000231 is a deficient number, since it is larger than the sum of its proper divisors (35201).

73000231 is a wasteful number, since it uses less digits than its factorization.

73000231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35200.

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 73000231 is about 8544.0172635593. The cubic root of 73000231 is about 417.9343604721.

Adding to 73000231 its reverse (13200037), we get a palindrome (86200268).

The spelling of 73000231 in words is "seventy-three million, two hundred thirty-one", and thus it is an aban number.