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231040074 = 23128330013
BaseRepresentation
bin11011100010101…
…10010001001010
3121002202001101210
431301112101022
5433121240244
634531553550
75503544136
oct1561262112
9532661353
10231040074
11109463911
126545b8b6
1338b34805
14229823c6
151543b4b9
hexdc5644a

231040074 has 16 divisors (see below), whose sum is σ = 462455712. Its totient is φ = 76950768.

The previous prime is 231040067. The next prime is 231040087. The reversal of 231040074 is 470040132.

It is a self number, because there is not a number n which added to its sum of digits gives 231040074.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7309 + ... + 22704.

It is an arithmetic number, because the mean of its divisors is an integer number (28903482).

Almost surely, 2231040074 is an apocalyptic number.

231040074 is an abundant number, since it is smaller than the sum of its proper divisors (231415638).

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

231040074 is a wasteful number, since it uses less digits than its factorization.

231040074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31301.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 231040074 is about 15200.0024342103. The cubic root of 231040074 is about 613.6147232633.

The spelling of 231040074 in words is "two hundred thirty-one million, forty thousand, seventy-four".

Divisors: 1 2 3 6 1283 2566 3849 7698 30013 60026 90039 180078 38506679 77013358 115520037 231040074