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2231379 = 321913049
BaseRepresentation
bin1000100000110001010011
311012100212200
420200301103
51032401004
6115454243
724652323
oct10406123
94170780
102231379
111294517
128b7383
13601857
14421283
152e1239
hex220c53

2231379 has 12 divisors (see below), whose sum is σ = 3393000. Its totient is φ = 1409184.

The previous prime is 2231371. The next prime is 2231381. The reversal of 2231379 is 9731322.

It is not a de Polignac number, because 2231379 - 23 = 2231371 is a prime.

It is a super-3 number, since 3×22313793 = 33330457835701958817, which contains 333 as substring.

2231379 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2231371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6354 + ... + 6695.

It is an arithmetic number, because the mean of its divisors is an integer number (282750).

22231379 is an apocalyptic number.

2231379 is a deficient number, since it is larger than the sum of its proper divisors (1161621).

2231379 is a wasteful number, since it uses less digits than its factorization.

2231379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13074 (or 13071 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 2231379 is about 1493.7801042992. The cubic root of 2231379 is about 130.6745802799.

The spelling of 2231379 in words is "two million, two hundred thirty-one thousand, three hundred seventy-nine".

Divisors: 1 3 9 19 57 171 13049 39147 117441 247931 743793 2231379