30140251 has 12 divisors (see below), whose sum is σ = 32918400. Its totient is φ = 27559728.

The previous prime is 30140239. The next prime is 30140321. The reversal of 30140251 is 15204103.

It is not a de Polignac number, because 30140251 - 2⁵ = 30140219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30140221) 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 11 ways as a sum of consecutive naturals, for example, 9030 + ... + 11908.

It is an arithmetic number, because the mean of its divisors is an integer number (2743200).

Almost surely, 2^30140251 is an apocalyptic number.

30140251 is a deficient number, since it is larger than the sum of its proper divisors (2778149).

30140251 is a wasteful number, since it uses less digits than its factorization.

30140251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2946 (or 2927 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 30140251 is about 5490.0137522596. The cubic root of 30140251 is about 311.2067118285.

Adding to 30140251 its reverse (15204103), we get a palindrome (45344354).

The spelling of 30140251 in words is "thirty million, one hundred forty thousand, two hundred fifty-one".