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23131131214 = 253647337277
BaseRepresentation
bin10101100010101110…
…010000110101001110
32012201001022012210111
4111202232100311032
5334333032144324
614343140230234
71446132241222
oct254256206516
965631265714
1023131131214
11989aa14274
12459669b37a
1322482b27b9
1411960a4782
15905ab3794
hex562b90d4e

23131131214 has 16 divisors (see below), whose sum is σ = 35406095328. Its totient is φ = 11329775392.

The previous prime is 23131131193. The next prime is 23131131223. The reversal of 23131131214 is 41213113132.

It is a super-2 number, since 2×231311312142 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100057 + ... + 237220.

It is an arithmetic number, because the mean of its divisors is an integer number (2212880958).

Almost surely, 223131131214 is an apocalyptic number.

23131131214 is a deficient number, since it is larger than the sum of its proper divisors (12274964114).

23131131214 is a wasteful number, since it uses less digits than its factorization.

23131131214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337979.

The product of its digits is 432, while the sum is 22.

Adding to 23131131214 its reverse (41213113132), we get a palindrome (64344244346).

The spelling of 23131131214 in words is "twenty-three billion, one hundred thirty-one million, one hundred thirty-one thousand, two hundred fourteen".

Divisors: 1 2 53 106 647 1294 34291 68582 337277 674554 17875681 35751362 218218219 436436438 11565565607 23131131214