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230131015 = 5162728289
BaseRepresentation
bin11011011011110…
…00010101000111
3121001000212101221
431231320111013
5432403143030
634500301211
75463036622
oct1555702507
9531025357
10230131015
111089a2924
12650a1807
13388a6aca
14227c6db9
151530be7a
hexdb78547

230131015 has 8 divisors (see below), whose sum is σ = 276336720. Its totient is φ = 183985152.

The previous prime is 230131007. The next prime is 230131019. The reversal of 230131015 is 510131032.

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 230131015 - 23 = 230131007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 230131015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230131019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6010 + ... + 22279.

It is an arithmetic number, because the mean of its divisors is an integer number (34542090).

Almost surely, 2230131015 is an apocalyptic number.

230131015 is a deficient number, since it is larger than the sum of its proper divisors (46205705).

230131015 is a wasteful number, since it uses less digits than its factorization.

230131015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29921.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 230131015 is about 15170.0697097937. The cubic root of 230131015 is about 612.8088815515.

Adding to 230131015 its reverse (510131032), we get a palindrome (740262047).

The spelling of 230131015 in words is "two hundred thirty million, one hundred thirty-one thousand, fifteen".

Divisors: 1 5 1627 8135 28289 141445 46026203 230131015