30813601 has 27 divisors (see below), whose sum is σ = 39460473. Its totient is φ = 23980320.

The previous prime is 30813599. The next prime is 30813613. The reversal of 30813601 is 10631803.

The square root of 30813601 is 5551.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 21669025 + 9144576 = 4655^2 + 3024^2 .

It is not a de Polignac number, because 30813601 - 2¹ = 30813599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30813641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 505111 + ... + 505171.

It is an arithmetic number, because the mean of its divisors is an integer number (1461499).

Almost surely, 2^30813601 is an apocalyptic number.

30813601 is the 5551-st square number.

30813601 is the 2776-th centered octagonal number.

It is an amenable number.

30813601 is a deficient number, since it is larger than the sum of its proper divisors (8646872).

30813601 is an equidigital number, since it uses as much as digits as its factorization.

30813601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The cubic root of 30813601 is about 313.5071751735.

The spelling of 30813601 in words is "thirty million, eight hundred thirteen thousand, six hundred one".