73224931 has 4 divisors (see below), whose sum is σ = 78857632. Its totient is φ = 67592232.

The previous prime is 73224929. The next prime is 73224953. The reversal of 73224931 is 13942237.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73224931 - 2¹ = 73224929 is a prime.

It is a super-2 number, since 2×73224931² = 10723781039909522, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 73224893 and 73224902.

It is not an unprimeable number, because it can be changed into a prime (73224901) 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, 2816331 + ... + 2816356.

It is an arithmetic number, because the mean of its divisors is an integer number (19714408).

Almost surely, 2^73224931 is an apocalyptic number.

73224931 is a deficient number, since it is larger than the sum of its proper divisors (5632701).

73224931 is a wasteful number, since it uses less digits than its factorization.

73224931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5632700.

The product of its digits is 9072, while the sum is 31.

The square root of 73224931 is about 8557.1567123666. The cubic root of 73224931 is about 418.3627319999.

The spelling of 73224931 in words is "seventy-three million, two hundred twenty-four thousand, nine hundred thirty-one".