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2312310020 = 225115615501
BaseRepresentation
bin1000100111010011…
…0000110100000100
312222011000112000212
42021310300310010
514213422410040
61021240454552
7111205211426
oct21164606404
95864015025
102312310020
11a87269819
1254647a458
132ab0952a7
1417d154816
15d8003d65
hex89d30d04

2312310020 has 12 divisors (see below), whose sum is σ = 4855851084. Its totient is φ = 924924000.

The previous prime is 2312310017. The next prime is 2312310043. The reversal of 2312310020 is 200132132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 662650564 + 1649659456 = 25742^2 + 40616^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2312309977 and 2312310004.

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, 57807731 + ... + 57807770.

It is an arithmetic number, because the mean of its divisors is an integer number (404654257).

Almost surely, 22312310020 is an apocalyptic number.

2312310020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2312310020 is an abundant number, since it is smaller than the sum of its proper divisors (2543541064).

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

2312310020 is a wasteful number, since it uses less digits than its factorization.

2312310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115615510 (or 115615508 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2312310020 is about 48086.4847956263. The cubic root of 2312310020 is about 1322.3569041015.

Adding to 2312310020 its reverse (200132132), we get a palindrome (2512442152).

The spelling of 2312310020 in words is "two billion, three hundred twelve million, three hundred ten thousand, twenty".

Divisors: 1 2 4 5 10 20 115615501 231231002 462462004 578077505 1156155010 2312310020