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30031103020 = 2251501555151
BaseRepresentation
bin11011111101111111…
…100100010000101100
32212111220211002200211
4123331333210100230
5443000430244040
621443542432204
72112125110132
oct337577442054
985456732624
1030031103020
1111810858206
1259a1432664
132aa7965159
14164c623752
15bab71e8ea
hex6fdfe442c

30031103020 has 12 divisors (see below), whose sum is σ = 63065316384. Its totient is φ = 12012441200.

The previous prime is 30031103017. The next prime is 30031103071. The reversal of 30031103020 is 2030113003.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 750777556 + ... + 750777595.

It is an arithmetic number, because the mean of its divisors is an integer number (5255443032).

Almost surely, 230031103020 is an apocalyptic number.

It is an amenable number.

30031103020 is an abundant number, since it is smaller than the sum of its proper divisors (33034213364).

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

30031103020 is a wasteful number, since it uses less digits than its factorization.

30031103020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501555160 (or 1501555158 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 30031103020 its reverse (2030113003), we get a palindrome (32061216023).

The spelling of 30031103020 in words is "thirty billion, thirty-one million, one hundred three thousand, twenty".

Divisors: 1 2 4 5 10 20 1501555151 3003110302 6006220604 7507775755 15015551510 30031103020