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231054870 = 2357701829
BaseRepresentation
bin11011100010110…
…01111000010110
3121002202210200210
431301121320112
5433122223440
634532150250
75503635234
oct1561317026
9532683623
10231054870
11109473a42
1265468386
1338b3b477
1422987954
1515440a80
hexdc59e16

231054870 has 16 divisors (see below), whose sum is σ = 554531760. Its totient is φ = 61614624.

The previous prime is 231054869. The next prime is 231054911. The reversal of 231054870 is 78450132.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 7701829 = 231054870 / (2 + 3 + 1 + 0 + 5 + 4 + 8 + 7 + 0).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3850885 + ... + 3850944.

It is an arithmetic number, because the mean of its divisors is an integer number (34658235).

Almost surely, 2231054870 is an apocalyptic number.

231054870 is an abundant number, since it is smaller than the sum of its proper divisors (323476890).

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

231054870 is a wasteful number, since it uses less digits than its factorization.

231054870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7701839.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 231054870 is about 15200.4891368666. The cubic root of 231054870 is about 613.6278217841.

The spelling of 231054870 in words is "two hundred thirty-one million, fifty-four thousand, eight hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 7701829 15403658 23105487 38509145 46210974 77018290 115527435 231054870