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231382370 = 2523138237
BaseRepresentation
bin11011100101010…
…01110101100010
3121010101102221102
431302221311202
5433213213440
634543154402
75506501112
oct1562516542
9533342842
10231382370
11109677aaa
12655a5a02
1338c2455b
1422a31042
15154a7b15
hexdca9d62

231382370 has 8 divisors (see below), whose sum is σ = 416488284. Its totient is φ = 92552944.

The previous prime is 231382309. The next prime is 231382373. The reversal of 231382370 is 73283132.

It can be written as a sum of positive squares in 2 ways, for example, as 229007689 + 2374681 = 15133^2 + 1541^2 .

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

It is a super-2 number, since 2×2313823702 = 107075602293633800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231382373) 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, 11569109 + ... + 11569128.

Almost surely, 2231382370 is an apocalyptic number.

231382370 is a deficient number, since it is larger than the sum of its proper divisors (185105914).

231382370 is a wasteful number, since it uses less digits than its factorization.

231382370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23138244.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 231382370 is about 15211.2580018879. The cubic root of 231382370 is about 613.9176061069.

The spelling of 231382370 in words is "two hundred thirty-one million, three hundred eighty-two thousand, three hundred seventy".

Divisors: 1 2 5 10 23138237 46276474 115691185 231382370