30740143 has 4 divisors (see below), whose sum is σ = 35131600. Its totient is φ = 26348688.

The previous prime is 30740117. The next prime is 30740147. The reversal of 30740143 is 34104703.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34104703 = 17 ⋅2006159.

It is a cyclic number.

It is not a de Polignac number, because 30740143 - 2¹⁷ = 30609071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30740147) 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, 2195718 + ... + 2195731.

It is an arithmetic number, because the mean of its divisors is an integer number (8782900).

Almost surely, 2^30740143 is an apocalyptic number.

30740143 is a deficient number, since it is larger than the sum of its proper divisors (4391457).

30740143 is an equidigital number, since it uses as much as digits as its factorization.

30740143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4391456.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 30740143 is about 5544.3794062095. The cubic root of 30740143 is about 313.2578487499.

Adding to 30740143 its reverse (34104703), we get a palindrome (64844846).

The spelling of 30740143 in words is "thirty million, seven hundred forty thousand, one hundred forty-three".