30771012 has 12 divisors (see below), whose sum is σ = 71799056. Its totient is φ = 10257000.

The previous prime is 30771007. The next prime is 30771017. The reversal of 30771012 is 21017703.

It is an interprime number because it is at equal distance from previous prime (30771007) and next prime (30771017).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 30771012.

It is not an unprimeable number, because it can be changed into a prime (30771017) 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, 1282114 + ... + 1282137.

Almost surely, 2^30771012 is an apocalyptic number.

It is an amenable number.

30771012 is an abundant number, since it is smaller than the sum of its proper divisors (41028044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30771012 is a wasteful number, since it uses less digits than its factorization.

30771012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564258 (or 2564256 counting only the distinct ones).

The product of its (nonzero) digits is 294, while the sum is 21.

The square root of 30771012 is about 5547.1625179005. The cubic root of 30771012 is about 313.3626706598.

Adding to 30771012 its reverse (21017703), we get a palindrome (51788715).

The spelling of 30771012 in words is "thirty million, seven hundred seventy-one thousand, twelve".