30910121000 has 64 divisors (see below), whose sum is σ = 78905136960. Its totient is φ = 11240040000.

The previous prime is 30910120991. The next prime is 30910121017. The reversal of 30910121000 is 12101903.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30910121000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1394006 + ... + 1416005.

It is an arithmetic number, because the mean of its divisors is an integer number (1232892765).

Almost surely, 2^30910121000 is an apocalyptic number.

It is an amenable number.

30910121000 is an abundant number, since it is smaller than the sum of its proper divisors (47995015960).

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

30910121000 is a wasteful number, since it uses less digits than its factorization.

30910121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810043 (or 2810029 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 30910121000 its reverse (12101903), we get a palindrome (30922222903).

The spelling of 30910121000 in words is "thirty billion, nine hundred ten million, one hundred twenty-one thousand".