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231344480 = 2554872969
BaseRepresentation
bin11011100101000…
…00100101100000
3121010022111222002
431302200211200
5433211010410
634542303132
75506252463
oct1562404540
9533274862
10231344480
11109651594
1265587aa8
1338c10233
1422a212da
151549b7a5
hexdca0960

231344480 has 48 divisors (see below), whose sum is σ = 547858080. Its totient is φ = 92316672.

The previous prime is 231344479. The next prime is 231344507. The reversal of 231344480 is 84443132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76436 + ... + 79404.

It is an arithmetic number, because the mean of its divisors is an integer number (11413710).

Almost surely, 2231344480 is an apocalyptic number.

231344480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231344480 is an abundant number, since it is smaller than the sum of its proper divisors (316513600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231344480 is a wasteful number, since it uses less digits than its factorization.

231344480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471 (or 3463 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 231344480 is about 15210.0124917766. The cubic root of 231344480 is about 613.8840936028.

The spelling of 231344480 in words is "two hundred thirty-one million, three hundred forty-four thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 487 974 1948 2435 2969 3896 4870 5938 7792 9740 11876 14845 15584 19480 23752 29690 38960 47504 59380 77920 95008 118760 237520 475040 1445903 2891806 5783612 7229515 11567224 14459030 23134448 28918060 46268896 57836120 115672240 231344480