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231265080 = 23325642403
BaseRepresentation
bin11011100100011…
…01001100111000
3121010011111001100
431302031030320
5433200440310
634540451400
75505502134
oct1562151470
9533144040
10231265080
111095a7972
1265549b60
1338bb3057
1422a003c4
1515482ec0
hexdc8d338

231265080 has 48 divisors (see below), whose sum is σ = 751612680. Its totient is φ = 61670592.

The previous prime is 231265061. The next prime is 231265081. The reversal of 231265080 is 80562132.

231265080 is a `hidden beast` number, since 2 + 3 + 1 + 2 + 650 + 8 + 0 = 666.

231265080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231265081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 320842 + ... + 321561.

Almost surely, 2231265080 is an apocalyptic number.

231265080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231265080 is an abundant number, since it is smaller than the sum of its proper divisors (520347600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231265080 is a wasteful number, since it uses less digits than its factorization.

231265080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642420 (or 642413 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 231265080 is about 15207.4021450082. The cubic root of 231265080 is about 613.8138549491.

The spelling of 231265080 in words is "two hundred thirty-one million, two hundred sixty-five thousand, eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 180 360 642403 1284806 1927209 2569612 3212015 3854418 5139224 5781627 6424030 7708836 9636045 11563254 12848060 15417672 19272090 23126508 25696120 28908135 38544180 46253016 57816270 77088360 115632540 231265080