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231066492 = 223103186947
BaseRepresentation
bin11011100010111…
…00101101111100
3121002210101122020
431301130231330
5433123111432
634532320140
75504014146
oct1561345574
9532711566
10231066492
11109481748
1265473050
1338b43847
142298bc96
151544422c
hexdc5cb7c

231066492 has 24 divisors (see below), whose sum is σ = 544392576. Its totient is φ = 76273968.

The previous prime is 231066491. The next prime is 231066527. The reversal of 231066492 is 294660132.

231066492 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231066491) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 92238 + ... + 94709.

It is an arithmetic number, because the mean of its divisors is an integer number (22683024).

Almost surely, 2231066492 is an apocalyptic number.

It is an amenable number.

231066492 is an abundant number, since it is smaller than the sum of its proper divisors (313326084).

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

231066492 is a wasteful number, since it uses less digits than its factorization.

231066492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187057 (or 187055 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 231066492 is about 15200.8714223889. The cubic root of 231066492 is about 613.6381100516.

The spelling of 231066492 in words is "two hundred thirty-one million, sixty-six thousand, four hundred ninety-two".

Divisors: 1 2 3 4 6 12 103 206 309 412 618 1236 186947 373894 560841 747788 1121682 2243364 19255541 38511082 57766623 77022164 115533246 231066492