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231985052 = 221341233467
BaseRepresentation
bin11011101001111…
…00111110011100
3121011112001122222
431310330332130
5433342010202
635004124512
75514561155
oct1564747634
9534461588
10231985052
11109a49892
1265836738
13390a5980
1422b4a92c
15155764a2
hexdd3cf9c

231985052 has 48 divisors (see below), whose sum is σ = 450751392. Its totient is φ = 103787520.

The previous prime is 231985049. The next prime is 231985063. The reversal of 231985052 is 250589132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 496523 + ... + 496989.

It is an arithmetic number, because the mean of its divisors is an integer number (9390654).

Almost surely, 2231985052 is an apocalyptic number.

It is an amenable number.

231985052 is a deficient number, since it is larger than the sum of its proper divisors (218766340).

231985052 is a wasteful number, since it uses less digits than its factorization.

231985052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 231985052 is about 15231.0555116840. The cubic root of 231985052 is about 614.4501680170.

The spelling of 231985052 in words is "two hundred thirty-one million, nine hundred eighty-five thousand, fifty-two".

Divisors: 1 2 4 13 26 41 52 82 164 233 466 467 533 932 934 1066 1868 2132 3029 6058 6071 9553 12116 12142 19106 19147 24284 38212 38294 76588 108811 124189 217622 248378 248911 435244 496756 497822 995644 1414543 2829086 4461251 5658172 8922502 17845004 57996263 115992526 231985052