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231577068 = 22331622519
BaseRepresentation
bin11011100110110…
…01010111101100
3121010202100000110
431303121113230
5433240431233
634551300020
75511241542
oct1563312754
9533670013
10231577068
111097a0308
126567a610
1338c92068
1422a81d92
15154e5663
hexdcd95ec

231577068 has 24 divisors (see below), whose sum is σ = 557777920. Its totient is φ = 74702160.

The previous prime is 231577039. The next prime is 231577081. The reversal of 231577068 is 860775132.

It is an unprimeable number.

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, 310888 + ... + 311631.

Almost surely, 2231577068 is an apocalyptic number.

It is an amenable number.

231577068 is an abundant number, since it is smaller than the sum of its proper divisors (326200852).

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

231577068 is a wasteful number, since it uses less digits than its factorization.

231577068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622557 (or 622555 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 231577068 is about 15217.6564555782. The cubic root of 231577068 is about 614.0897526419.

The spelling of 231577068 in words is "two hundred thirty-one million, five hundred seventy-seven thousand, sixty-eight".

Divisors: 1 2 3 4 6 12 31 62 93 124 186 372 622519 1245038 1867557 2490076 3735114 7470228 19298089 38596178 57894267 77192356 115788534 231577068