30242951987 has 4 divisors (see below), whose sum is σ = 30282693816. Its totient is φ = 30203210160.

The previous prime is 30242951971. The next prime is 30242951989. The reversal of 30242951987 is 78915924203.

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

It is a cyclic number.

It is not a de Polignac number, because 30242951987 - 2⁴ = 30242951971 is a prime.

It is a super-2 number, since 2×30242951987² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30242951989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19869773 + ... + 19871294.

It is an arithmetic number, because the mean of its divisors is an integer number (7570673454).

Almost surely, 2^30242951987 is an apocalyptic number.

30242951987 is a deficient number, since it is larger than the sum of its proper divisors (39741829).

30242951987 is an equidigital number, since it uses as much as digits as its factorization.

30242951987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39741828.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 30242951987 in words is "thirty billion, two hundred forty-two million, nine hundred fifty-one thousand, nine hundred eighty-seven".