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201431054 = 21129331249
BaseRepresentation
bin11000000000110…
…01100000001110
3112001000202110102
430000121200032
5403031243204
631553211102
74664064356
oct1400314016
9461022412
10201431054
11a3780150
1257560a92
1332968796
141ca75b66
1512a3d41e
hexc01980e

201431054 has 16 divisors (see below), whose sum is σ = 330750000. Its totient is φ = 91244160.

The previous prime is 201431053. The next prime is 201431057. The reversal of 201431054 is 450134102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201431053) 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, 9179 + ... + 22070.

It is an arithmetic number, because the mean of its divisors is an integer number (20671875).

Almost surely, 2201431054 is an apocalyptic number.

201431054 is a deficient number, since it is larger than the sum of its proper divisors (129318946).

201431054 is a wasteful number, since it uses less digits than its factorization.

201431054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31555.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 201431054 is about 14192.6408395337. The cubic root of 201431054 is about 586.1950431524.

Adding to 201431054 its reverse (450134102), we get a palindrome (651565156).

The spelling of 201431054 in words is "two hundred one million, four hundred thirty-one thousand, fifty-four".

Divisors: 1 2 11 22 293 586 3223 6446 31249 62498 343739 687478 9155957 18311914 100715527 201431054