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231264061 = 7311065733
BaseRepresentation
bin11011100100011…
…00111100111101
3121010011102122121
431302030330331
5433200422221
634540442541
75505466150
oct1562147475
9533142577
10231264061
111095a7126
1265549451
1338bb2752
14229ddc97
1515482a41
hexdc8cf3d

231264061 has 8 divisors (see below), whose sum is σ = 272827904. Its totient is φ = 191831760.

The previous prime is 231264031. The next prime is 231264091. The reversal of 231264061 is 160462132.

It is an interprime number because it is at equal distance from previous prime (231264031) and next prime (231264091).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231264061 - 211 = 231262013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231264031) 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, 532650 + ... + 533083.

It is an arithmetic number, because the mean of its divisors is an integer number (34103488).

Almost surely, 2231264061 is an apocalyptic number.

It is an amenable number.

231264061 is a deficient number, since it is larger than the sum of its proper divisors (41563843).

231264061 is a wasteful number, since it uses less digits than its factorization.

231264061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065771.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 231264061 is about 15207.3686415501. The cubic root of 231264061 is about 613.8129534191.

The spelling of 231264061 in words is "two hundred thirty-one million, two hundred sixty-four thousand, sixty-one".

Divisors: 1 7 31 217 1065733 7460131 33037723 231264061