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384006131 = 1920210849
BaseRepresentation
bin10110111000110…
…111011111110011
3222202120112101022
4112320313133303
51241301144011
6102034330055
712341666255
oct2670673763
9882515338
10384006131
11187841543
12a872992b
1361731782
1438dddcd5
1523aa48db
hex16e377f3

384006131 has 4 divisors (see below), whose sum is σ = 404217000. Its totient is φ = 363795264.

The previous prime is 384006113. The next prime is 384006173. The reversal of 384006131 is 131600483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131600483 = 718800069.

It is a cyclic number.

It is not a de Polignac number, because 384006131 - 210 = 384005107 is a prime.

It is a super-2 number, since 2×3840061312 = 294921417291178322, 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 384006131.

It is not an unprimeable number, because it can be changed into a prime (384006191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10105406 + ... + 10105443.

It is an arithmetic number, because the mean of its divisors is an integer number (101054250).

Almost surely, 2384006131 is an apocalyptic number.

384006131 is a deficient number, since it is larger than the sum of its proper divisors (20210869).

384006131 is a wasteful number, since it uses less digits than its factorization.

384006131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20210868.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 384006131 is about 19596.0743772828. The cubic root of 384006131 is about 726.8521054339.

The spelling of 384006131 in words is "three hundred eighty-four million, six thousand, one hundred thirty-one".

Divisors: 1 19 20210849 384006131