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38723631213271 = 278561139013111
BaseRepresentation
bin10001100111000000011000…
…10010000110101011010111
312002002221110102212120111111
420303200030102012223113
520033421444042311041
6214205220211315451
711104455452261464
oct1063401422065327
9162087412776444
1038723631213271
111137a66632a204
124414a958abb87
13187b813266374
1497c33b5ac66b
1547245573c981
hex23380c486ad7

38723631213271 has 4 divisors (see below), whose sum is σ = 38723770504944. Its totient is φ = 38723491921600.

The previous prime is 38723631213269. The next prime is 38723631213317. The reversal of 38723631213271 is 17231213632783.

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 38723631213271 - 21 = 38723631213269 is a prime.

It is a super-2 number, since 2×387236312132712 (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38723631213221) 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, 69227995 + ... + 69785116.

It is an arithmetic number, because the mean of its divisors is an integer number (9680942626236).

Almost surely, 238723631213271 is an apocalyptic number.

38723631213271 is a deficient number, since it is larger than the sum of its proper divisors (139291673).

38723631213271 is a wasteful number, since it uses less digits than its factorization.

38723631213271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139291672.

The product of its digits is 1524096, while the sum is 49.

The spelling of 38723631213271 in words is "thirty-eight trillion, seven hundred twenty-three billion, six hundred thirty-one million, two hundred thirteen thousand, two hundred seventy-one".

Divisors: 1 278561 139013111 38723631213271