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131392152 = 2333608297
BaseRepresentation
bin1111101010011…
…10001010011000
3100011020102011000
413311032022120
5232114022102
621012105000
73153546333
oct765161230
9304212130
10131392152
1168192961
1238005160
13212b5348
141364361a
15b80601c
hex7d4e298

131392152 has 32 divisors (see below), whose sum is σ = 364978800. Its totient is φ = 43797312.

The previous prime is 131392111. The next prime is 131392171. The reversal of 131392152 is 251293131.

It is a super-2 number, since 2×1313921522 = 34527795214382208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 303933 + ... + 304364.

Almost surely, 2131392152 is an apocalyptic number.

131392152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131392152 is an abundant number, since it is smaller than the sum of its proper divisors (233586648).

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

131392152 is a wasteful number, since it uses less digits than its factorization.

131392152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608312 (or 608302 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 131392152 is about 11462.6415803688. The cubic root of 131392152 is about 508.3815824010.

The spelling of 131392152 in words is "one hundred thirty-one million, three hundred ninety-two thousand, one hundred fifty-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 108 216 608297 1216594 1824891 2433188 3649782 4866376 5474673 7299564 10949346 14599128 16424019 21898692 32848038 43797384 65696076 131392152