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230872831 = 733199643
BaseRepresentation
bin11011100001011…
…01011011111111
3121002102112222121
431300231123333
5433100412311
634524223411
75502246430
oct1560553377
9532375877
10230872831
1110935a1a2
126539ab67
1338aa6657
142293b487
1515406b71
hexdc2d6ff

230872831 has 8 divisors (see below), whose sum is σ = 264654464. Its totient is φ = 197291160.

The previous prime is 230872813. The next prime is 230872843. The reversal of 230872831 is 138278032.

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 230872831 - 27 = 230872703 is a prime.

It is a super-2 number, since 2×2308728312 = 106604528187909122, which contains 22 as substring.

It is the 15195-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230872331) by changing a digit.

It is a nontrivial repunit in base 15194.

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 7 ways as a sum of consecutive naturals, for example, 47505 + ... + 52138.

It is an arithmetic number, because the mean of its divisors is an integer number (33081808).

Almost surely, 2230872831 is an apocalyptic number.

230872831 is a deficient number, since it is larger than the sum of its proper divisors (33781633).

230872831 is an equidigital number, since it uses as much as digits as its factorization.

230872831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99981.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 230872831 is about 15194.5000246800. The cubic root of 230872831 is about 613.4666284080.

The spelling of 230872831 in words is "two hundred thirty million, eight hundred seventy-two thousand, eight hundred thirty-one".

Divisors: 1 7 331 2317 99643 697501 32981833 230872831