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231453272 = 2328931659
BaseRepresentation
bin11011100101110…
…11001001011000
3121010112001012102
431302323021120
5433223001042
634544502532
75510214611
oct1562731130
9533461172
10231453272
111097162a6
126561aa48
1338c4a8cb
1422a4cc08
15154bdb32
hexdcbb258

231453272 has 8 divisors (see below), whose sum is σ = 433974900. Its totient is φ = 115726632.

The previous prime is 231453247. The next prime is 231453281. The reversal of 231453272 is 272354132.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14465822 + ... + 14465837.

Almost surely, 2231453272 is an apocalyptic number.

It is an amenable number.

231453272 is a deficient number, since it is larger than the sum of its proper divisors (202521628).

231453272 is a wasteful number, since it uses less digits than its factorization.

231453272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28931665 (or 28931661 counting only the distinct ones).

The product of its digits is 10080, while the sum is 29.

The square root of 231453272 is about 15213.5883998483. The cubic root of 231453272 is about 613.9803068517.

The spelling of 231453272 in words is "two hundred thirty-one million, four hundred fifty-three thousand, two hundred seventy-two".

Divisors: 1 2 4 8 28931659 57863318 115726636 231453272