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131988414 = 2343511583
BaseRepresentation
bin1111101110111…
…11101110111110
3100012100201001210
413313133232332
5232242112124
621032545250
73161611605
oct767375676
9305321053
10131988414
116855a938
1238252226
132146386c
141375aa3c
15b8c2a29
hex7ddfbbe

131988414 has 16 divisors (see below), whose sum is σ = 270116352. Its totient is φ = 42972888.

The previous prime is 131988401. The next prime is 131988431. The reversal of 131988414 is 414889131.

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, 255534 + ... + 256049.

It is an arithmetic number, because the mean of its divisors is an integer number (16882272).

Almost surely, 2131988414 is an apocalyptic number.

131988414 is an abundant number, since it is smaller than the sum of its proper divisors (138127938).

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

131988414 is a wasteful number, since it uses less digits than its factorization.

131988414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511631.

The product of its digits is 27648, while the sum is 39.

The square root of 131988414 is about 11488.6210660810. The cubic root of 131988414 is about 509.1494396159.

It can be divided in two parts, 13198 and 8414, that added together give a palindrome (21612).

The spelling of 131988414 in words is "one hundred thirty-one million, nine hundred eighty-eight thousand, four hundred fourteen".

Divisors: 1 2 3 6 43 86 129 258 511583 1023166 1534749 3069498 21998069 43996138 65994207 131988414