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231450343 = 1917536949
BaseRepresentation
bin11011100101110…
…10011011100111
3121010111220011221
431302322123213
5433222402333
634544441211
75510203225
oct1562723347
9533456157
10231450343
11109714083
1265619207
1338c49487
1422a4bb15
15154bcd2d
hexdcba6e7

231450343 has 8 divisors (see below), whose sum is σ = 243806000. Its totient is φ = 219112128.

The previous prime is 231450341. The next prime is 231450353. The reversal of 231450343 is 343054132.

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

It is a cyclic number.

It is not a de Polignac number, because 231450343 - 21 = 231450341 is a prime.

It is a super-2 number, since 2×2314503432 = 107138522549635298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231450341) 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, 29833 + ... + 36781.

It is an arithmetic number, because the mean of its divisors is an integer number (30475750).

Almost surely, 2231450343 is an apocalyptic number.

231450343 is a deficient number, since it is larger than the sum of its proper divisors (12355657).

231450343 is a wasteful number, since it uses less digits than its factorization.

231450343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8721.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 231450343 is about 15213.4921369158. The cubic root of 231450343 is about 613.9777169036.

The spelling of 231450343 in words is "two hundred thirty-one million, four hundred fifty thousand, three hundred forty-three".

Divisors: 1 19 1753 6949 33307 132031 12181597 231450343