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231769085 = 5169927283
BaseRepresentation
bin11011101000010…
…00001111111101
3121011010002102012
431310020033331
5433313102320
634555341005
75513001422
oct1564101775
9534102365
10231769085
111099115a9
1265751765
133902b592
1422ad1d49
15155324c5
hexdd083fd

231769085 has 8 divisors (see below), whose sum is σ = 278296800. Its totient is φ = 185299344.

The previous prime is 231769009. The next prime is 231769093. The reversal of 231769085 is 580967132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231769085 - 218 = 231506941 is a prime.

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, 5147 + ... + 22136.

It is an arithmetic number, because the mean of its divisors is an integer number (34787100).

Almost surely, 2231769085 is an apocalyptic number.

It is an amenable number.

231769085 is a deficient number, since it is larger than the sum of its proper divisors (46527715).

231769085 is a wasteful number, since it uses less digits than its factorization.

231769085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28987.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 231769085 is about 15223.9641683761. The cubic root of 231769085 is about 614.2594342333.

The spelling of 231769085 in words is "two hundred thirty-one million, seven hundred sixty-nine thousand, eighty-five".

Divisors: 1 5 1699 8495 27283 136415 46353817 231769085