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231292468 = 221121134229
BaseRepresentation
bin11011100100100…
…11111000110100
3121010012212121201
431302103320310
5433202324333
634541222244
75505645031
oct1562237064
9533185551
10231292468
11109616500
1265561984
1338bc2664
1422a0a388
151548b17d
hexdc93e34

231292468 has 36 divisors (see below), whose sum is σ = 448946820. Its totient is φ = 104177920.

The previous prime is 231292447. The next prime is 231292471. The reversal of 231292468 is 864292132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 123921424 + 107371044 = 11132^2 + 10362^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52578 + ... + 56806.

It is an arithmetic number, because the mean of its divisors is an integer number (12470745).

Almost surely, 2231292468 is an apocalyptic number.

It is an amenable number.

231292468 is a deficient number, since it is larger than the sum of its proper divisors (217654352).

231292468 is a wasteful number, since it uses less digits than its factorization.

231292468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368 (or 4355 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 231292468 is about 15208.3026008822. The cubic root of 231292468 is about 613.8380846776.

The spelling of 231292468 in words is "two hundred thirty-one million, two hundred ninety-two thousand, four hundred sixty-eight".

Divisors: 1 2 4 11 22 44 113 121 226 242 452 484 1243 2486 4229 4972 8458 13673 16916 27346 46519 54692 93038 186076 477877 511709 955754 1023418 1911508 2046836 5256647 10513294 21026588 57823117 115646234 231292468