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231374227 = 7223239859
BaseRepresentation
bin11011100101001…
…11110110010011
3121010101000202211
431302213312103
5433212433402
634543052551
75506435300
oct1562476623
9533330684
10231374227
11109671977
12655a1157
1338c20936
1422a2c0a7
15154a54d7
hexdca7d93

231374227 has 24 divisors (see below), whose sum is σ = 282355200. Its totient is φ = 188684496.

The previous prime is 231374207. The next prime is 231374237. The reversal of 231374227 is 722473132.

It is not a de Polignac number, because 231374227 - 215 = 231341459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231374207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 268924 + ... + 269782.

It is an arithmetic number, because the mean of its divisors is an integer number (11764800).

Almost surely, 2231374227 is an apocalyptic number.

231374227 is a deficient number, since it is larger than the sum of its proper divisors (50980973).

231374227 is a wasteful number, since it uses less digits than its factorization.

231374227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135 (or 1128 counting only the distinct ones).

The product of its digits is 14112, while the sum is 31.

The square root of 231374227 is about 15210.9903359380. The cubic root of 231374227 is about 613.9104041902.

The spelling of 231374227 in words is "two hundred thirty-one million, three hundred seventy-four thousand, two hundred twenty-seven".

Divisors: 1 7 23 49 161 239 859 1127 1673 5497 6013 11711 19757 38479 42091 138299 205301 269353 968093 1437107 4721923 10059749 33053461 231374227