73731323 has 2 divisors, whose sum is σ = 73731324. Its totient is φ = 73731322.

The previous prime is 73731319. The next prime is 73731331. The reversal of 73731323 is 32313737.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73731323 - 2² = 73731319 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (73731223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36865661 + 36865662.

It is an arithmetic number, because the mean of its divisors is an integer number (36865662).

Almost surely, 2^73731323 is an apocalyptic number.

73731323 is a deficient number, since it is larger than the sum of its proper divisors (1).

73731323 is an equidigital number, since it uses as much as digits as its factorization.

73731323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7938, while the sum is 29.

The square root of 73731323 is about 8586.6945328223. The cubic root of 73731323 is about 419.3249226921.

The spelling of 73731323 in words is "seventy-three million, seven hundred thirty-one thousand, three hundred twenty-three".