30773 has 2 divisors, whose sum is σ = 30774. Its totient is φ = 30772.

The previous prime is 30763. The next prime is 30781. The reversal of 30773 is 37703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20164 + 10609 = 142^2 + 103^2 .

It is a cyclic number.

It is not a de Polignac number, because 30773 - 2⁴ = 30757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15386 + 15387.

It is an arithmetic number, because the mean of its divisors is an integer number (15387).

2³⁰⁷⁷³ is an apocalyptic number.

It is an amenable number.

30773 is a deficient number, since it is larger than the sum of its proper divisors (1).

30773 is an equidigital number, since it uses as much as digits as its factorization.

30773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 441, while the sum is 20.

The square root of 30773 is about 175.4223474931. The cubic root of 30773 is about 31.3369418911.

The spelling of 30773 in words is "thirty thousand, seven hundred seventy-three".