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231382369 = 2310139931
BaseRepresentation
bin11011100101010…
…01110101100001
3121010101102221101
431302221311201
5433213213434
634543154401
75506501111
oct1562516541
9533342841
10231382369
11109677aa9
12655a5a01
1338c2455a
1422a31041
15154a7b14
hexdca9d61

231382369 has 8 divisors (see below), whose sum is σ = 241705152. Its totient is φ = 221081520.

The previous prime is 231382309. The next prime is 231382373. The reversal of 231382369 is 963283132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231382369 - 217 = 231251297 is a prime.

It is a super-2 number, since 2×2313823692 = 107075601368104322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231382309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18334 + ... + 28264.

It is an arithmetic number, because the mean of its divisors is an integer number (30213144).

Almost surely, 2231382369 is an apocalyptic number.

It is an amenable number.

231382369 is a deficient number, since it is larger than the sum of its proper divisors (10322783).

231382369 is a wasteful number, since it uses less digits than its factorization.

231382369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10967.

The product of its digits is 46656, while the sum is 37.

The square root of 231382369 is about 15211.2579690176. The cubic root of 231382369 is about 613.9176052225.

The spelling of 231382369 in words is "two hundred thirty-one million, three hundred eighty-two thousand, three hundred sixty-nine".

Divisors: 1 23 1013 9931 23299 228413 10060103 231382369