30530572391 has 12 divisors (see below), whose sum is σ = 35380509720. Its totient is φ = 26122412160.

The previous prime is 30530572367. The next prime is 30530572399. The reversal of 30530572391 is 19327503503.

It is not a de Polignac number, because 30530572391 - 2¹⁸ = 30530310247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30530572399) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4798736 + ... + 4805093.

It is an arithmetic number, because the mean of its divisors is an integer number (2948375810).

Almost surely, 2^30530572391 is an apocalyptic number.

30530572391 is a deficient number, since it is larger than the sum of its proper divisors (4849937329).

30530572391 is a wasteful number, since it uses less digits than its factorization.

30530572391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9603874 (or 9603857 counting only the distinct ones).

The product of its (nonzero) digits is 85050, while the sum is 38.

The spelling of 30530572391 in words is "thirty billion, five hundred thirty million, five hundred seventy-two thousand, three hundred ninety-one".