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231444201430 = 251317104725883
BaseRepresentation
bin1101011110001100100…
…1100011111111010110
3211010101202002121210101
43113203021203333112
512242444203421210
6254153552244314
722502255152441
oct3274311437726
9733352077711
10231444201430
118a178244132
1238a3224069a
1318a9596aa20
14b2b8266658
156048c74a3a
hex35e3263fd6

231444201430 has 32 divisors (see below), whose sum is σ = 475036609824. Its totient is φ = 80429477376.

The previous prime is 231444201403. The next prime is 231444201463. The reversal of 231444201430 is 34102444132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52360732 + ... + 52365151.

It is an arithmetic number, because the mean of its divisors is an integer number (14844894057).

Almost surely, 2231444201430 is an apocalyptic number.

231444201430 is an abundant number, since it is smaller than the sum of its proper divisors (243592408394).

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

231444201430 is a wasteful number, since it uses less digits than its factorization.

231444201430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104725920.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 231444201430 its reverse (34102444132), we get a palindrome (265546645562).

The spelling of 231444201430 in words is "two hundred thirty-one billion, four hundred forty-four million, two hundred one thousand, four hundred thirty".

Divisors: 1 2 5 10 13 17 26 34 65 85 130 170 221 442 1105 2210 104725883 209451766 523629415 1047258830 1361436479 1780340011 2722872958 3560680022 6807182395 8901700055 13614364790 17803400110 23144420143 46288840286 115722100715 231444201430