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31144444434 = 236191124267
BaseRepresentation
bin11101000000010110…
…101000001000010010
32222101111202201000000
4131000112220020102
51002240434210214
622150233310430
72151534260355
oct350026501022
988344681000
1031144444434
1112232255084
126052265416
132c2450755c
14171643629c
15c2433d809
hex7405a8212

31144444434 has 56 divisors (see below), whose sum is σ = 73729495440. Its totient is φ = 9835078968.

The previous prime is 31144444423. The next prime is 31144444447. The reversal of 31144444434 is 43444444113.

31144444434 is a `hidden beast` number, since 31 + 144 + 44 + 443 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 534432 + ... + 589835.

Almost surely, 231144444434 is an apocalyptic number.

31144444434 is an abundant number, since it is smaller than the sum of its proper divisors (42585051006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31144444434 is a wasteful number, since it uses less digits than its factorization.

31144444434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124306 (or 1124291 counting only the distinct ones).

The product of its digits is 147456, while the sum is 36.

Adding to 31144444434 its reverse (43444444113), we get a palindrome (74588888547).

The spelling of 31144444434 in words is "thirty-one billion, one hundred forty-four million, four hundred forty-four thousand, four hundred thirty-four".

Divisors: 1 2 3 6 9 18 19 27 38 54 57 81 114 162 171 243 342 486 513 729 1026 1458 1539 3078 4617 9234 13851 27702 1124267 2248534 3372801 6745602 10118403 20236806 21361073 30355209 42722146 60710418 64083219 91065627 128166438 182131254 192249657 273196881 384499314 546393762 576748971 819590643 1153497942 1639181286 1730246913 3460493826 5190740739 10381481478 15572222217 31144444434