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231073480 = 23511525167
BaseRepresentation
bin11011100010111…
…10011011001000
3121002210202020001
431301132123020
5433123322410
634532412344
75504043421
oct1561363310
9532722201
10231073480
11109486a20
12654770b4
1338b46a91
1422990648
151544633a
hexdc5e6c8

231073480 has 32 divisors (see below), whose sum is σ = 567181440. Its totient is φ = 84026560.

The previous prime is 231073471. The next prime is 231073489. The reversal of 231073480 is 84370132.

It is an interprime number because it is at equal distance from previous prime (231073471) and next prime (231073489).

It is not an unprimeable number, because it can be changed into a prime (231073489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262144 + ... + 263023.

It is an arithmetic number, because the mean of its divisors is an integer number (17724420).

Almost surely, 2231073480 is an apocalyptic number.

231073480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231073480 is an abundant number, since it is smaller than the sum of its proper divisors (336107960).

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

231073480 is a wasteful number, since it uses less digits than its factorization.

231073480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525189 (or 525185 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 231073480 is about 15201.1012758945. The cubic root of 231073480 is about 613.6442959477.

The spelling of 231073480 in words is "two hundred thirty-one million, seventy-three thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 220 440 525167 1050334 2100668 2625835 4201336 5251670 5776837 10503340 11553674 21006680 23107348 28884185 46214696 57768370 115536740 231073480