30201391 has 4 divisors (see below), whose sum is σ = 32946984. Its totient is φ = 27455800.

The previous prime is 30201371. The next prime is 30201403. The reversal of 30201391 is 19310203.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30201391 - 2⁷ = 30201263 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 (30201331) 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, 1372780 + ... + 1372801.

It is an arithmetic number, because the mean of its divisors is an integer number (8236746).

Almost surely, 2^30201391 is an apocalyptic number.

30201391 is a deficient number, since it is larger than the sum of its proper divisors (2745593).

30201391 is a wasteful number, since it uses less digits than its factorization.

30201391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745592.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 30201391 is about 5495.5792233394. The cubic root of 30201391 is about 311.4169990309.

Adding to 30201391 its reverse (19310203), we get a palindrome (49511594).

The spelling of 30201391 in words is "thirty million, two hundred one thousand, three hundred ninety-one".