30872282491 has 4 divisors (see below), whose sum is σ = 30875397984. Its totient is φ = 30869167000.

The previous prime is 30872282479. The next prime is 30872282501. The reversal of 30872282491 is 19428227803.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30872282491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30872282401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1542835 + ... + 1562716.

It is an arithmetic number, because the mean of its divisors is an integer number (7718849496).

Almost surely, 2^30872282491 is an apocalyptic number.

30872282491 is a deficient number, since it is larger than the sum of its proper divisors (3115493).

30872282491 is an equidigital number, since it uses as much as digits as its factorization.

30872282491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115492.

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 30872282491 in words is "thirty billion, eight hundred seventy-two million, two hundred eighty-two thousand, four hundred ninety-one".