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30311003020 = 22515139100109
BaseRepresentation
bin11100001110101011…
…010011001110001100
32220020102111111022111
4130032223103032030
5444034104044040
621531421553404
72122064163124
oct341653231614
986212444274
1030311003020
1111944853221
125a5b115864
132b2094615c
141677883c84
15bc60acdea
hex70ead338c

30311003020 has 24 divisors (see below), whose sum is σ = 63657946800. Its totient is φ = 12123479232.

The previous prime is 30311003017. The next prime is 30311003027. The reversal of 30311003020 is 2030011303.

It is not an unprimeable number, because it can be changed into a prime (30311003027) 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, 252726 + ... + 352834.

It is an arithmetic number, because the mean of its divisors is an integer number (2652414450).

Almost surely, 230311003020 is an apocalyptic number.

It is an amenable number.

30311003020 is an abundant number, since it is smaller than the sum of its proper divisors (33346943780).

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

30311003020 is a wasteful number, since it uses less digits than its factorization.

30311003020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115257 (or 115255 counting only the distinct ones).

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

Adding to 30311003020 its reverse (2030011303), we get a palindrome (32341014323).

The spelling of 30311003020 in words is "thirty billion, three hundred eleven million, three thousand, twenty".

Divisors: 1 2 4 5 10 20 15139 30278 60556 75695 100109 151390 200218 302780 400436 500545 1001090 2002180 1515550151 3031100302 6062200604 7577750755 15155501510 30311003020