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231853190 = 2542015519
BaseRepresentation
bin11011101000111…
…00110010000110
3121011021100210012
431310130302012
5433323300230
635001230222
75513501552
oct1564346206
9534240705
10231853190
11109969808
1265792372
133905a94a
1422b14862
151554c395
hexdd1cc86

231853190 has 16 divisors (see below), whose sum is σ = 417510720. Its totient is φ = 92702400.

The previous prime is 231853189. The next prime is 231853199. The reversal of 231853190 is 91358132.

231853190 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2318531902 = 107511803426352200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231853199) 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, 39251 + ... + 44769.

It is an arithmetic number, because the mean of its divisors is an integer number (26094420).

Almost surely, 2231853190 is an apocalyptic number.

231853190 is a deficient number, since it is larger than the sum of its proper divisors (185657530).

231853190 is a wasteful number, since it uses less digits than its factorization.

231853190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9727.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 231853190 is about 15226.7261747232. The cubic root of 231853190 is about 614.3337266292. Note that the first 3 decimals are identical.

The spelling of 231853190 in words is "two hundred thirty-one million, eight hundred fifty-three thousand, one hundred ninety".

Divisors: 1 2 5 10 4201 5519 8402 11038 21005 27595 42010 55190 23185319 46370638 115926595 231853190