30397301988 has 24 divisors (see below), whose sum is σ = 71082252192. Its totient is φ = 10110260544.

The previous prime is 30397301971. The next prime is 30397301989. The reversal of 30397301988 is 88910379303.

It is a happy number.

It is a super-5 number, since 5×30397301988⁵ (a number of 54 digits) contains 55555 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30397301988.

It is not an unprimeable number, because it can be changed into a prime (30397301989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2765970 + ... + 2776937.

It is an arithmetic number, because the mean of its divisors is an integer number (2961760508).

Almost surely, 2^30397301988 is an apocalyptic number.

It is an amenable number.

30397301988 is an abundant number, since it is smaller than the sum of its proper divisors (40684950204).

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

30397301988 is a wasteful number, since it uses less digits than its factorization.

30397301988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5543371 (or 5543369 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 30397301988 in words is "thirty billion, three hundred ninety-seven million, three hundred one thousand, nine hundred eighty-eight".