30002131020 has 48 divisors (see below), whose sum is σ = 84445820928. Its totient is φ = 7958677440.

The previous prime is 30002131007. The next prime is 30002131037. The reversal of 30002131020 is 2013120003.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 30002130987 and 30002131005.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1297534 + ... + 1320453.

It is an arithmetic number, because the mean of its divisors is an integer number (1759287936).

Almost surely, 2^30002131020 is an apocalyptic number.

30002131020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30002131020 is an abundant number, since it is smaller than the sum of its proper divisors (54443689908).

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

30002131020 is a wasteful number, since it uses less digits than its factorization.

30002131020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618190 (or 2618188 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 30002131020 its reverse (2013120003), we get a palindrome (32015251023).

The spelling of 30002131020 in words is "thirty billion, two million, one hundred thirty-one thousand, twenty".