73731223 has 2 divisors, whose sum is σ = 73731224. Its totient is φ = 73731222.

The previous prime is 73731221. The next prime is 73731233. The reversal of 73731223 is 32213737.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73731223 - 2¹ = 73731221 is a prime.

Together with 73731221, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 73731191 and 73731200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73731221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36865611 + 36865612.

It is an arithmetic number, because the mean of its divisors is an integer number (36865612).

Almost surely, 2^73731223 is an apocalyptic number.

73731223 is a deficient number, since it is larger than the sum of its proper divisors (1).

73731223 is an equidigital number, since it uses as much as digits as its factorization.

73731223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292, while the sum is 28.

The square root of 73731223 is about 8586.6887098578. The cubic root of 73731223 is about 419.3247331186.

The spelling of 73731223 in words is "seventy-three million, seven hundred thirty-one thousand, two hundred twenty-three".