30803197 has 4 divisors (see below), whose sum is σ = 30814300. Its totient is φ = 30792096.

The previous prime is 30803147. The next prime is 30803221. The reversal of 30803197 is 79130803.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 79130803 = 293 ⋅270071.

It can be written as a sum of positive squares in 2 ways, for example, as 13003236 + 17799961 = 3606^2 + 4219^2 .

It is a cyclic number.

It is not a de Polignac number, because 30803197 - 2¹⁵ = 30770429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30803107) 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, 2623 + ... + 8275.

It is an arithmetic number, because the mean of its divisors is an integer number (7703575).

Almost surely, 2^30803197 is an apocalyptic number.

It is an amenable number.

30803197 is a deficient number, since it is larger than the sum of its proper divisors (11103).

30803197 is an equidigital number, since it uses as much as digits as its factorization.

30803197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11102.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 30803197 is about 5550.0627924376. The cubic root of 30803197 is about 313.4718866892.

The spelling of 30803197 in words is "thirty million, eight hundred three thousand, one hundred ninety-seven".