30659143 has 6 divisors (see below), whose sum is σ = 32569016. Its totient is φ = 28855392.

The previous prime is 30659131. The next prime is 30659147. The reversal of 30659143 is 34195603.

It is a de Polignac number, because none of the positive numbers 2^k-30659143 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 (30659147) 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, 52755 + ... + 53332.

Almost surely, 2^30659143 is an apocalyptic number.

30659143 is a deficient number, since it is larger than the sum of its proper divisors (1909873).

30659143 is a wasteful number, since it uses less digits than its factorization.

30659143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106121 (or 106104 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 30659143 is about 5537.0698930030. The cubic root of 30659143 is about 312.9824628580.

The spelling of 30659143 in words is "thirty million, six hundred fifty-nine thousand, one hundred forty-three".