30201973 has 2 divisors, whose sum is σ = 30201974. Its totient is φ = 30201972.

The previous prime is 30201961. The next prime is 30201989. The reversal of 30201973 is 37910203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29844369 + 357604 = 5463^2 + 598^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30201973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30201943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15100986 + 15100987.

It is an arithmetic number, because the mean of its divisors is an integer number (15100987).

Almost surely, 2^30201973 is an apocalyptic number.

It is an amenable number.

30201973 is a deficient number, since it is larger than the sum of its proper divisors (1).

30201973 is an equidigital number, since it uses as much as digits as its factorization.

30201973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 30201973 is about 5495.6321747366. The cubic root of 30201973 is about 311.4189994192.

The spelling of 30201973 in words is "thirty million, two hundred one thousand, nine hundred seventy-three".