30943142 has 16 divisors (see below), whose sum is σ = 48556800. Its totient is φ = 14761032.

The previous prime is 30943141. The next prime is 30943163. The reversal of 30943142 is 24134903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30943141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26993 + ... + 28115.

It is an arithmetic number, because the mean of its divisors is an integer number (3034800).

Almost surely, 2^30943142 is an apocalyptic number.

30943142 is a deficient number, since it is larger than the sum of its proper divisors (17613658).

30943142 is a wasteful number, since it uses less digits than its factorization.

30943142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 30943142 is about 5562.6560202838. The cubic root of 30943142 is about 313.9458911186.

The spelling of 30943142 in words is "thirty million, nine hundred forty-three thousand, one hundred forty-two".