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231360020 = 22511568001
BaseRepresentation
bin11011100101001…
…00011000010100
3121010100022021122
431302210120110
5433212010040
634542503112
75506346003
oct1562443024
9533308248
10231360020
11109662231
1265594a98
1338c17328
1422a26c3a
15154a11b5
hexdca4614

231360020 has 12 divisors (see below), whose sum is σ = 485856084. Its totient is φ = 92544000.

The previous prime is 231359971. The next prime is 231360029. The reversal of 231360020 is 20063132.

231360020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 49056016 + 182304004 = 7004^2 + 13502^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231360029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5783981 + ... + 5784020.

It is an arithmetic number, because the mean of its divisors is an integer number (40488007).

Almost surely, 2231360020 is an apocalyptic number.

231360020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231360020 is an abundant number, since it is smaller than the sum of its proper divisors (254496064).

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

231360020 is a wasteful number, since it uses less digits than its factorization.

231360020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11568010 (or 11568008 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 231360020 is about 15210.5233309048. The cubic root of 231360020 is about 613.8978386828.

The spelling of 231360020 in words is "two hundred thirty-one million, three hundred sixty thousand, twenty".

Divisors: 1 2 4 5 10 20 11568001 23136002 46272004 57840005 115680010 231360020