30140653 has 4 divisors (see below), whose sum is σ = 30212668. Its totient is φ = 30068640.

The previous prime is 30140639. The next prime is 30140731. The reversal of 30140653 is 35604103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35604103 = 17 ⋅2094359.

It can be written as a sum of positive squares in 2 ways, for example, as 4313929 + 25826724 = 2077^2 + 5082^2 .

It is a cyclic number.

It is not a de Polignac number, because 30140653 - 2⁹ = 30140141 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 (30140753) 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, 35376 + ... + 36217.

It is an arithmetic number, because the mean of its divisors is an integer number (7553167).

Almost surely, 2^30140653 is an apocalyptic number.

It is an amenable number.

30140653 is a deficient number, since it is larger than the sum of its proper divisors (72015).

30140653 is an equidigital number, since it uses as much as digits as its factorization.

30140653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72014.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 30140653 is about 5490.0503640677. The cubic root of 30140653 is about 311.2080954106.

Adding to 30140653 its reverse (35604103), we get a palindrome (65744756).

The spelling of 30140653 in words is "thirty million, one hundred forty thousand, six hundred fifty-three".