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231361300 = 22522313613
BaseRepresentation
bin11011100101001…
…00101100010100
3121010100101001001
431302210230110
5433212030200
634542513044
75506352512
oct1562445424
9533311031
10231361300
11109663195
1265595784
1338c17aa1
1422a274b2
15154a176a
hexdca4b14

231361300 has 18 divisors (see below), whose sum is σ = 502054238. Its totient is φ = 92544480.

The previous prime is 231361223. The next prime is 231361303. The reversal of 231361300 is 3163132.

It can be written as a sum of positive squares in 3 ways, for example, as 2202256 + 229159044 = 1484^2 + 15138^2 .

It is a super-2 number, since 2×2313613002 = 107056102275380000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231361303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1156707 + ... + 1156906.

Almost surely, 2231361300 is an apocalyptic number.

231361300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231361300 is an abundant number, since it is smaller than the sum of its proper divisors (270692938).

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

231361300 is a wasteful number, since it uses less digits than its factorization.

231361300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313627 (or 2313620 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 231361300 is about 15210.5654069795. The cubic root of 231361300 is about 613.8989708113.

The spelling of 231361300 in words is "two hundred thirty-one million, three hundred sixty-one thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 2313613 4627226 9254452 11568065 23136130 46272260 57840325 115680650 231361300