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210131023222 = 21912743541447
BaseRepresentation
bin1100001110110011001…
…0001111010101110110
3202002101101120222200201
43003230302033111312
511420322020220342
6240311033031114
721116146140601
oct3035462172566
9662341528621
10210131023222
118113053696a
123488455549a
1316a7a1c2a83
14a2557cd338
1556ecab3db7
hex30ecc8f576

210131023222 has 16 divisors (see below), whose sum is σ = 334398320640. Its totient is φ = 98751999528.

The previous prime is 210131023213. The next prime is 210131023307. The reversal of 210131023222 is 222320131012.

It is a super-2 number, since 2×2101310232222 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 210131023222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21765898 + ... + 21775549.

It is an arithmetic number, because the mean of its divisors is an integer number (20899895040).

Almost surely, 2210131023222 is an apocalyptic number.

210131023222 is a deficient number, since it is larger than the sum of its proper divisors (124267297418).

210131023222 is a wasteful number, since it uses less digits than its factorization.

210131023222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43541595.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 210131023222 its reverse (222320131012), we get a palindrome (432451154234).

The spelling of 210131023222 in words is "two hundred ten billion, one hundred thirty-one million, twenty-three thousand, two hundred twenty-two".

Divisors: 1 2 19 38 127 254 2413 4826 43541447 87082894 827287493 1654574986 5529763769 11059527538 105065511611 210131023222