30121371 has 24 divisors (see below), whose sum is σ = 50885120. Its totient is φ = 16810416.

The previous prime is 30121369. The next prime is 30121411. The reversal of 30121371 is 17312103.

It is not a de Polignac number, because 30121371 - 2¹ = 30121369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30121321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2851 + ... + 8268.

Almost surely, 2^30121371 is an apocalyptic number.

30121371 is a deficient number, since it is larger than the sum of its proper divisors (20763749).

30121371 is a wasteful number, since it uses less digits than its factorization.

30121371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11175 (or 11172 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 30121371 is about 5488.2939972272. The cubic root of 30121371 is about 311.1417177891.

Adding to 30121371 its reverse (17312103), we get a palindrome (47433474).

The spelling of 30121371 in words is "thirty million, one hundred twenty-one thousand, three hundred seventy-one".