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232081919 = 1066721757
BaseRepresentation
bin11011101010101…
…00100111111111
3121011200222112122
431311110213333
5433403110134
635010153155
75515443446
oct1565244777
9534628478
10232081919
1110a005643
12658827bb
133910aaa4
1422b73d5d
151559502e
hexdd549ff

232081919 has 4 divisors (see below), whose sum is σ = 232114344. Its totient is φ = 232049496.

The previous prime is 232081907. The next prime is 232081939. The reversal of 232081919 is 919180232.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 232081919 - 216 = 232016383 is a prime.

It is a super-2 number, since 2×2320819192 = 107724034253445122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232081939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212 + ... + 21545.

It is an arithmetic number, because the mean of its divisors is an integer number (58028586).

Almost surely, 2232081919 is an apocalyptic number.

232081919 is a deficient number, since it is larger than the sum of its proper divisors (32425).

232081919 is a wasteful number, since it uses less digits than its factorization.

232081919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32424.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 232081919 is about 15234.2350973063. The cubic root of 232081919 is about 614.5356787880.

The spelling of 232081919 in words is "two hundred thirty-two million, eighty-one thousand, nine hundred nineteen".

Divisors: 1 10667 21757 232081919