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38201131 = 371032463
BaseRepresentation
bin1001000110111…
…0011100101011
32122212211002201
42101232130223
534234414011
63442441031
7642463363
oct221563453
978784081
1038201131
111a622091
1210963177
137bb6b27
1451059a3
153548cc1
hex246e72b

38201131 has 4 divisors (see below), whose sum is σ = 39233632. Its totient is φ = 37168632.

The previous prime is 38201123. The next prime is 38201171. The reversal of 38201131 is 13110283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13110283 = 41319763.

It is a cyclic number.

It is not a de Polignac number, because 38201131 - 23 = 38201123 is a prime.

It is a super-2 number, since 2×382011312 = 2918652819358322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38201099 and 38201108.

It is not an unprimeable number, because it can be changed into a prime (38201171) 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, 516195 + ... + 516268.

It is an arithmetic number, because the mean of its divisors is an integer number (9808408).

Almost surely, 238201131 is an apocalyptic number.

38201131 is a deficient number, since it is larger than the sum of its proper divisors (1032501).

38201131 is a wasteful number, since it uses less digits than its factorization.

38201131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032500.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 38201131 is about 6180.7063512191. The cubic root of 38201131 is about 336.7896529179.

The spelling of 38201131 in words is "thirty-eight million, two hundred one thousand, one hundred thirty-one".

Divisors: 1 37 1032463 38201131