30990201 has 32 divisors (see below), whose sum is σ = 49051008. Its totient is φ = 17187840.

The previous prime is 30990191. The next prime is 30990209. The reversal of 30990201 is 10209903.

It is a happy number.

It is not a de Polignac number, because 30990201 - 2¹³ = 30982009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30990209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20011 + ... + 21503.

It is an arithmetic number, because the mean of its divisors is an integer number (1532844).

Almost surely, 2^30990201 is an apocalyptic number.

It is an amenable number.

30990201 is a deficient number, since it is larger than the sum of its proper divisors (18060807).

30990201 is a wasteful number, since it uses less digits than its factorization.

30990201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 30990201 is about 5566.8843171023. The cubic root of 30990201 is about 314.1049624080.

The spelling of 30990201 in words is "thirty million, nine hundred ninety thousand, two hundred one".