30140351 has 4 divisors (see below), whose sum is σ = 30170400. Its totient is φ = 30110304.

The previous prime is 30140347. The next prime is 30140381. The reversal of 30140351 is 15304103.

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 30140351 - 2² = 30140347 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 (30140321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13466 + ... + 15543.

It is an arithmetic number, because the mean of its divisors is an integer number (7542600).

Almost surely, 2^30140351 is an apocalyptic number.

30140351 is a deficient number, since it is larger than the sum of its proper divisors (30049).

30140351 is a wasteful number, since it uses less digits than its factorization.

30140351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30048.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 30140351 is about 5490.0228596974. The cubic root of 30140351 is about 311.2070560043.

Adding to 30140351 its reverse (15304103), we get a palindrome (45444454).

The spelling of 30140351 in words is "thirty million, one hundred forty thousand, three hundred fifty-one".