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231980268 = 223131487053
BaseRepresentation
bin11011101001110…
…11110011101100
3121011111211002210
431310323303230
5433341332033
635004050420
75514541212
oct1564736354
9534454083
10231980268
11109a46233
1265833a10
13390a3740
1422b48cb2
1515574d63
hexdd3bcec

231980268 has 24 divisors (see below), whose sum is σ = 582925168. Its totient is φ = 71378496.

The previous prime is 231980239. The next prime is 231980293. The reversal of 231980268 is 862089132.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 743371 + ... + 743682.

Almost surely, 2231980268 is an apocalyptic number.

It is an amenable number.

231980268 is an abundant number, since it is smaller than the sum of its proper divisors (350944900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231980268 is a wasteful number, since it uses less digits than its factorization.

231980268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487073 (or 1487071 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 231980268 is about 15230.8984633212. The cubic root of 231980268 is about 614.4459442537.

The spelling of 231980268 in words is "two hundred thirty-one million, nine hundred eighty thousand, two hundred sixty-eight".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 1487053 2974106 4461159 5948212 8922318 17844636 19331689 38663378 57995067 77326756 115990134 231980268