30081143 has 6 divisors (see below), whose sum is σ = 31955016. Its totient is φ = 28311392.

The previous prime is 30081131. The next prime is 30081179. The reversal of 30081143 is 34118003.

It is a happy number.

It is not a de Polignac number, because 30081143 - 2⁴ = 30081127 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 (30081343) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51755 + ... + 52332.

It is an arithmetic number, because the mean of its divisors is an integer number (5325836).

Almost surely, 2^30081143 is an apocalyptic number.

30081143 is a deficient number, since it is larger than the sum of its proper divisors (1873873).

30081143 is a wasteful number, since it uses less digits than its factorization.

30081143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104121 (or 104104 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 30081143 is about 5484.6278816343. The cubic root of 30081143 is about 311.0031430292.

Adding to 30081143 its reverse (34118003), we get a palindrome (64199146).

The spelling of 30081143 in words is "thirty million, eighty-one thousand, one hundred forty-three".