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380190131 = 443858217
BaseRepresentation
bin10110101010010…
…011110110110011
3222111101122210222
4112222103312303
51234312041011
6101420443255
712264364016
oct2652236663
9874348728
10380190131
11185675522
12a73a952b
13609c6899
14386c937d
152359dddb
hex16a93db3

380190131 has 4 divisors (see below), whose sum is σ = 381048792. Its totient is φ = 379331472.

The previous prime is 380190127. The next prime is 380190137. The reversal of 380190131 is 131091083.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 380190131 - 22 = 380190127 is a prime.

It is a super-2 number, since 2×3801901312 = 289089071419594322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 380190131.

It is not an unprimeable number, because it can be changed into a prime (380190137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428666 + ... + 429551.

It is an arithmetic number, because the mean of its divisors is an integer number (95262198).

Almost surely, 2380190131 is an apocalyptic number.

380190131 is a deficient number, since it is larger than the sum of its proper divisors (858661).

380190131 is an equidigital number, since it uses as much as digits as its factorization.

380190131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858660.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 380190131 is about 19498.4648370070. The cubic root of 380190131 is about 724.4364267090.

The spelling of 380190131 in words is "three hundred eighty million, one hundred ninety thousand, one hundred thirty-one".

Divisors: 1 443 858217 380190131