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231934121 = 1983147073
BaseRepresentation
bin11011101001100…
…00100010101001
3121011102110210122
431310300202221
5433333342441
635003053025
75514256526
oct1564604251
9534373718
10231934121
11109a145a1
1265811175
1339088733
1422b3614d
151556634b
hexdd308a9

231934121 has 8 divisors (see below), whose sum is σ = 247084320. Its totient is φ = 217078272.

The previous prime is 231934103. The next prime is 231934127. The reversal of 231934121 is 121439132.

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 231934121 - 26 = 231934057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231934127) 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 7 ways as a sum of consecutive naturals, for example, 71960 + ... + 75113.

It is an arithmetic number, because the mean of its divisors is an integer number (30885540).

Almost surely, 2231934121 is an apocalyptic number.

It is an amenable number.

231934121 is a deficient number, since it is larger than the sum of its proper divisors (15150199).

231934121 is a wasteful number, since it uses less digits than its factorization.

231934121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147175.

The product of its digits is 1296, while the sum is 26.

The square root of 231934121 is about 15229.3834740609. The cubic root of 231934121 is about 614.4051983782.

The spelling of 231934121 in words is "two hundred thirty-one million, nine hundred thirty-four thousand, one hundred twenty-one".

Divisors: 1 19 83 1577 147073 2794387 12207059 231934121