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379311287 = 1163326149
BaseRepresentation
bin10110100110111…
…101010010110111
3222102202000021012
4112212331102313
51234100430122
6101345542435
712254043545
oct2646752267
9872660235
10379311287
11185125203
12a7044a1b
1360779864
143853ad95
15234787e2
hex169bd4b7

379311287 has 4 divisors (see below), whose sum is σ = 379638600. Its totient is φ = 378983976.

The previous prime is 379311277. The next prime is 379311341. The reversal of 379311287 is 782113973.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 782113973 = 3125229483.

It is a cyclic number.

It is not a de Polignac number, because 379311287 - 216 = 379245751 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 (379311217) 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, 161912 + ... + 164237.

It is an arithmetic number, because the mean of its divisors is an integer number (94909650).

Almost surely, 2379311287 is an apocalyptic number.

379311287 is a deficient number, since it is larger than the sum of its proper divisors (327313).

379311287 is a wasteful number, since it uses less digits than its factorization.

379311287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327312.

The product of its digits is 63504, while the sum is 41.

The square root of 379311287 is about 19475.9155625609. The cubic root of 379311287 is about 723.8777958583.

The spelling of 379311287 in words is "three hundred seventy-nine million, three hundred eleven thousand, two hundred eighty-seven".

Divisors: 1 1163 326149 379311287