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230699691 = 33191273541
BaseRepresentation
bin11011100000000…
…11001010101011
3121002002202111000
431300003022223
5433024342231
634520410043
75500625565
oct1560031253
9532082430
10230699691
11109251102
1265316923
1338a458c1
14228d4335
15153c06e6
hexdc032ab

230699691 has 32 divisors (see below), whose sum is σ = 362700800. Its totient is φ = 144516960.

The previous prime is 230699681. The next prime is 230699713. The reversal of 230699691 is 196996032.

It is a happy number.

It is not a de Polignac number, because 230699691 - 27 = 230699563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230699681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63381 + ... + 66921.

It is an arithmetic number, because the mean of its divisors is an integer number (11334400).

Almost surely, 2230699691 is an apocalyptic number.

230699691 is a deficient number, since it is larger than the sum of its proper divisors (132001109).

230699691 is a wasteful number, since it uses less digits than its factorization.

230699691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3696 (or 3690 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 230699691 is about 15188.8014997892. The cubic root of 230699691 is about 613.3132363518.

The spelling of 230699691 in words is "two hundred thirty million, six hundred ninety-nine thousand, six hundred ninety-one".

Divisors: 1 3 9 19 27 57 127 171 381 513 1143 2413 3429 3541 7239 10623 21717 31869 65151 67279 95607 201837 449707 605511 1349121 1816533 4047363 8544433 12142089 25633299 76899897 230699691