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231555048 = 2339648127
BaseRepresentation
bin11011100110100…
…11111111101000
3121010201012210220
431303103333220
5433234230143
634551010040
75511120414
oct1563237750
9533635726
10231555048
1110978580a
1265669920
1338c8502a
1422a77d44
15154ddd83
hexdcd3fe8

231555048 has 16 divisors (see below), whose sum is σ = 578887680. Its totient is φ = 77185008.

The previous prime is 231555013. The next prime is 231555067. The reversal of 231555048 is 840555132.

231555048 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4824040 + ... + 4824087.

It is an arithmetic number, because the mean of its divisors is an integer number (36180480).

Almost surely, 2231555048 is an apocalyptic number.

It is an amenable number.

231555048 is an abundant number, since it is smaller than the sum of its proper divisors (347332632).

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

231555048 is a wasteful number, since it uses less digits than its factorization.

231555048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9648136 (or 9648132 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 231555048 is about 15216.9329366992. The cubic root of 231555048 is about 614.0702880132.

It can be divided in two parts, 23155 and 5048, that added together give a triangular number (28203 = T237).

The spelling of 231555048 in words is "two hundred thirty-one million, five hundred fifty-five thousand, forty-eight".

Divisors: 1 2 3 4 6 8 12 24 9648127 19296254 28944381 38592508 57888762 77185016 115777524 231555048