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19234831 = 7112310861
BaseRepresentation
bin100100101100…
…0000000001111
31100012020020011
41021120000033
514411003311
61524134051
7322331140
oct111300017
940166204
1019234831
11a948460
126537327
133ca6075
1427a9ac7
151a4e321
hex125800f

19234831 has 16 divisors (see below), whose sum is σ = 25026048. Its totient is φ = 14335200.

The previous prime is 19234819. The next prime is 19234847. The reversal of 19234831 is 13843291.

It is not a de Polignac number, because 19234831 - 213 = 19226639 is a prime.

It is a super-2 number, since 2×192348312 = 739957447197122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19234793 and 19234802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19234811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3660 + ... + 7201.

It is an arithmetic number, because the mean of its divisors is an integer number (1564128).

Almost surely, 219234831 is an apocalyptic number.

19234831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

19234831 is a deficient number, since it is larger than the sum of its proper divisors (5791217).

19234831 is a wasteful number, since it uses less digits than its factorization.

19234831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10902.

The product of its digits is 5184, while the sum is 31.

The square root of 19234831 is about 4385.7531850299. The cubic root of 19234831 is about 267.9350059590.

The spelling of 19234831 in words is "nineteen million, two hundred thirty-four thousand, eight hundred thirty-one".

Divisors: 1 7 11 23 77 161 253 1771 10861 76027 119471 249803 836297 1748621 2747833 19234831