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2312110231 = 29315943591
BaseRepresentation
bin1000100111010000…
…0000000010010111
312222010122100222021
42021310000002113
514213400011411
61021232314011
7111203420104
oct21164000227
95863570867
102312110231
11a87142702
125463a2907
132ab025382
1417d101aab
15d7eb4a71
hex89d00097

2312110231 has 16 divisors (see below), whose sum is σ = 2510899200. Its totient is φ = 2123704800.

The previous prime is 2312110219. The next prime is 2312110237. The reversal of 2312110231 is 1320112132.

It is not a de Polignac number, because 2312110231 - 219 = 2311585943 is a prime.

It is a super-2 number, since 2×23121102312 = 10691707440589746722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312110237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31246 + ... + 74836.

It is an arithmetic number, because the mean of its divisors is an integer number (156931200).

Almost surely, 22312110231 is an apocalyptic number.

2312110231 is a deficient number, since it is larger than the sum of its proper divisors (198788969).

2312110231 is a wasteful number, since it uses less digits than its factorization.

2312110231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43710.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2312110231 is about 48084.4073583111. The cubic root of 2312110231 is about 1322.3188180937.

Adding to 2312110231 its reverse (1320112132), we get a palindrome (3632222363).

The spelling of 2312110231 in words is "two billion, three hundred twelve million, one hundred ten thousand, two hundred thirty-one".

Divisors: 1 29 31 59 899 1711 1829 43591 53041 1264139 1351321 2571869 39188309 74584201 79727939 2312110231