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20143044031 = 1117431249923
BaseRepresentation
bin10010110000100111…
…100111010110111111
31220222210200122202211
4102300213213112333
5312223104402111
613130435201251
71312110022615
oct226047472677
956883618684
1020143044031
1185a7250130
123aa1a46227
131b9020c686
14d912bd6b5
157cd5c4521
hex4b09e75bf

20143044031 has 16 divisors (see below), whose sum is σ = 23320908288. Its totient is φ = 17194633600.

The previous prime is 20143044017. The next prime is 20143044043. The reversal of 20143044031 is 13044034102.

It is a cyclic number.

It is not a de Polignac number, because 20143044031 - 219 = 20142519743 is a prime.

It is a super-2 number, since 2×201430440312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20143043993 and 20143044011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20143044001) 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, 44365 + ... + 205558.

It is an arithmetic number, because the mean of its divisors is an integer number (1457556768).

Almost surely, 220143044031 is an apocalyptic number.

20143044031 is a deficient number, since it is larger than the sum of its proper divisors (3177864257).

20143044031 is a wasteful number, since it uses less digits than its factorization.

20143044031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250382.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20143044031 its reverse (13044034102), we get a palindrome (33187078133).

The spelling of 20143044031 in words is "twenty billion, one hundred forty-three million, forty-four thousand, thirty-one".

Divisors: 1 11 17 187 431 4741 7327 80597 249923 2749153 4248691 46735601 107716813 1184884943 1831185821 20143044031