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231149050 = 25211420271
BaseRepresentation
bin11011100011100…
…00110111111010
3121002221120212221
431301300313322
5433133232200
634534154254
75504506636
oct1561606772
9532846787
10231149050
11109528780
12654b298a
1338b722b2
14229addc6
151545d91a
hexdc70dfa

231149050 has 24 divisors (see below), whose sum is σ = 469023552. Its totient is φ = 84054000.

The previous prime is 231149033. The next prime is 231149081. The reversal of 231149050 is 50941132.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209586 + ... + 210685.

It is an arithmetic number, because the mean of its divisors is an integer number (19542648).

Almost surely, 2231149050 is an apocalyptic number.

231149050 is an abundant number, since it is smaller than the sum of its proper divisors (237874502).

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

231149050 is a wasteful number, since it uses less digits than its factorization.

231149050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420294 (or 420289 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 231149050 is about 15203.5867478697. The cubic root of 231149050 is about 613.7111838269.

The spelling of 231149050 in words is "two hundred thirty-one million, one hundred forty-nine thousand, fifty".

Divisors: 1 2 5 10 11 22 25 50 55 110 275 550 420271 840542 2101355 4202710 4622981 9245962 10506775 21013550 23114905 46229810 115574525 231149050