30143612 has 12 divisors (see below), whose sum is σ = 53245080. Its totient is φ = 14930736.

The previous prime is 30143611. The next prime is 30143621. The reversal of 30143612 is 21634103.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30143611) 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, 34787 + ... + 35642.

It is an arithmetic number, because the mean of its divisors is an integer number (4437090).

Almost surely, 2^30143612 is an apocalyptic number.

It is an amenable number.

30143612 is a deficient number, since it is larger than the sum of its proper divisors (23101468).

30143612 is a wasteful number, since it uses less digits than its factorization.

30143612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70540 (or 70538 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 30143612 is about 5490.3198449635. The cubic root of 30143612 is about 311.2182791606.

Adding to 30143612 its reverse (21634103), we get a palindrome (51777715).

The spelling of 30143612 in words is "thirty million, one hundred forty-three thousand, six hundred twelve".