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231241204 = 22137421973
BaseRepresentation
bin11011100100001…
…11010111110100
3121010010021022001
431302013113310
5433144204304
634540145044
75505342415
oct1562072764
9533107261
10231241204
11109590a37
1265538184
1338ba521c
14229d580c
151547ada4
hexdc875f4

231241204 has 12 divisors (see below), whose sum is σ = 407626884. Its totient is φ = 114776384.

The previous prime is 231241193. The next prime is 231241207. The reversal of 231241204 is 402142132.

It can be written as a sum of positive squares in 2 ways, for example, as 189612900 + 41628304 = 13770^2 + 6452^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231241207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210439 + ... + 211534.

It is an arithmetic number, because the mean of its divisors is an integer number (33968907).

Almost surely, 2231241204 is an apocalyptic number.

It is an amenable number.

231241204 is a deficient number, since it is larger than the sum of its proper divisors (176385680).

231241204 is a wasteful number, since it uses less digits than its factorization.

231241204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422114 (or 422112 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 231241204 is about 15206.6171122969. The cubic root of 231241204 is about 613.7927306705.

Adding to 231241204 its reverse (402142132), we get a palindrome (633383336).

The spelling of 231241204 in words is "two hundred thirty-one million, two hundred forty-one thousand, two hundred four".

Divisors: 1 2 4 137 274 548 421973 843946 1687892 57810301 115620602 231241204