30031003020 has 48 divisors (see below), whose sum is σ = 84198901248. Its totient is φ = 7997592000.

The previous prime is 30031003003. The next prime is 30031003031. The reversal of 30031003020 is 2030013003.

It is a happy number.

It is a super-2 number, since 2×30031003020² (a number of 22 digits) contains 22 as substring.

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 = 30031002987 and 30031003005.

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, 288174 + ... + 378293.

It is an arithmetic number, because the mean of its divisors is an integer number (1754143776).

Almost surely, 2^30031003020 is an apocalyptic number.

30031003020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30031003020 is an abundant number, since it is smaller than the sum of its proper divisors (54167898228).

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

30031003020 is a wasteful number, since it uses less digits than its factorization.

30031003020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667230 (or 667228 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 12.

Adding to 30031003020 its reverse (2030013003), we get a palindrome (32061016023).

The spelling of 30031003020 in words is "thirty billion, thirty-one million, three thousand, twenty".