30031012 has 24 divisors (see below), whose sum is σ = 58145472. Its totient is φ = 13456800.

The previous prime is 30030991. The next prime is 30031021. The reversal of 30031012 is 21013003.

It is a self number, because there is not a number n which added to its sum of digits gives 30031012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1683 + ... + 7930.

It is an arithmetic number, because the mean of its divisors is an integer number (2422728).

Almost surely, 2^30031012 is an apocalyptic number.

It is an amenable number.

30031012 is a deficient number, since it is larger than the sum of its proper divisors (28114460).

30031012 is a wasteful number, since it uses less digits than its factorization.

30031012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9699 (or 9697 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 30031012 is about 5480.0558391316. The cubic root of 30031012 is about 310.8302820504.

Adding to 30031012 its reverse (21013003), we get a palindrome (51044015).

Subtracting from 30031012 its reverse (21013003), we obtain a square (9018009 = 3003²).

The spelling of 30031012 in words is "thirty million, thirty-one thousand, twelve".