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131456512 = 2911171373
BaseRepresentation
bin1111101010111…
…01111000000000
3100011100200102201
413311131320000
5232123102022
621013322544
73154235065
oct765357000
9304320381
10131456512
1168227250
1238036454
1321308725
141365cc6c
15b81a127
hex7d5de00

131456512 has 80 divisors (see below), whose sum is σ = 303610032. Its totient is φ = 56197120.

The previous prime is 131456491. The next prime is 131456539. The reversal of 131456512 is 215654131.

It is a super-2 number, since 2×1314565122 = 34561629094412288, which contains 22 as substring.

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, 95058 + ... + 96430.

Almost surely, 2131456512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131456512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151805016).

131456512 is an abundant number, since it is smaller than the sum of its proper divisors (172153520).

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

131456512 is a wasteful number, since it uses less digits than its factorization.

131456512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419 (or 1403 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 131456512 is about 11465.4486174768. The cubic root of 131456512 is about 508.4645759367.

The spelling of 131456512 in words is "one hundred thirty-one million, four hundred fifty-six thousand, five hundred twelve".

Divisors: 1 2 4 8 11 16 17 22 32 34 44 64 68 88 128 136 176 187 256 272 352 374 512 544 704 748 1088 1373 1408 1496 2176 2746 2816 2992 4352 5492 5632 5984 8704 10984 11968 15103 21968 23341 23936 30206 43936 46682 47872 60412 87872 93364 95744 120824 175744 186728 241648 256751 351488 373456 483296 513502 702976 746912 966592 1027004 1493824 1933184 2054008 2987648 3866368 4108016 5975296 7732736 8216032 11950592 16432064 32864128 65728256 131456512