30015031806 has 48 divisors (see below), whose sum is σ = 66459204864. Its totient is φ = 9785804112.

The previous prime is 30015031771. The next prime is 30015031811. The reversal of 30015031806 is 60813051003.

It is a self number, because there is not a number n which added to its sum of digits gives 30015031806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1399641 + ... + 1420923.

It is an arithmetic number, because the mean of its divisors is an integer number (1384566768).

Almost surely, 2^30015031806 is an apocalyptic number.

30015031806 is an abundant number, since it is smaller than the sum of its proper divisors (36444173058).

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

30015031806 is a wasteful number, since it uses less digits than its factorization.

30015031806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23005 (or 23002 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 30015031806 its reverse (60813051003), we get a palindrome (90828082809).

The spelling of 30015031806 in words is "thirty billion, fifteen million, thirty-one thousand, eight hundred six".