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231034144 = 2511656347
BaseRepresentation
bin11011100010101…
…00110100100000
3121002201202021011
431301110310200
5433121043034
634531510304
75503520635
oct1561246440
9532652234
10231034144
1110945a410
1265458394
1338b31bc3
142298018c
1515439864
hexdc54d20

231034144 has 24 divisors (see below), whose sum is σ = 496199088. Its totient is φ = 105015360.

The previous prime is 231034099. The next prime is 231034151. The reversal of 231034144 is 441430132.

231034144 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 327822 + ... + 328525.

It is an arithmetic number, because the mean of its divisors is an integer number (20674962).

Almost surely, 2231034144 is an apocalyptic number.

It is an amenable number.

231034144 is an abundant number, since it is smaller than the sum of its proper divisors (265164944).

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

231034144 is a wasteful number, since it uses less digits than its factorization.

231034144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656368 (or 656360 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 231034144 is about 15199.8073672004. The cubic root of 231034144 is about 613.6094734288.

Adding to 231034144 its reverse (441430132), we get a palindrome (672464276).

The spelling of 231034144 in words is "two hundred thirty-one million, thirty-four thousand, one hundred forty-four".

Divisors: 1 2 4 8 11 16 22 32 44 88 176 352 656347 1312694 2625388 5250776 7219817 10501552 14439634 21003104 28879268 57758536 115517072 231034144