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131670383 = 1337457599
BaseRepresentation
bin1111101100100…
…10000101101111
3100011202112210212
413312102011233
5232201423013
621022053035
73156115445
oct766220557
9304675725
10131670383
11683629a9
123811a17b
1321381b90
14136b6b95
15b85d6a8
hex7d9216f

131670383 has 16 divisors (see below), whose sum is σ = 146193600. Its totient is φ = 117801216.

The previous prime is 131670379. The next prime is 131670401. The reversal of 131670383 is 383076131.

It is not a de Polignac number, because 131670383 - 22 = 131670379 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131670283) 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, 219518 + ... + 220116.

It is an arithmetic number, because the mean of its divisors is an integer number (9137100).

Almost surely, 2131670383 is an apocalyptic number.

131670383 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131670383 is a deficient number, since it is larger than the sum of its proper divisors (14523217).

131670383 is a wasteful number, since it uses less digits than its factorization.

131670383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 131670383 is about 11474.7715881407. The cubic root of 131670383 is about 508.7401725449.

The spelling of 131670383 in words is "one hundred thirty-one million, six hundred seventy thousand, three hundred eighty-three".

Divisors: 1 13 37 457 481 599 5941 7787 16909 22163 219817 273743 288119 3558659 10128491 131670383