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203131014 = 23191781851
BaseRepresentation
bin11000001101110…
…00100010000110
3112011020010100220
430012320202012
5404000143024
632053445210
75014404462
oct1406704206
9464203326
10203131014
11a4731379
1258040806
1333112488
141cd994a2
1512c76e79
hexc1b8886

203131014 has 16 divisors (see below), whose sum is σ = 427644480. Its totient is φ = 64146600.

The previous prime is 203130979. The next prime is 203131043. The reversal of 203131014 is 410131302.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 203130984 and 203131002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 890812 + ... + 891039.

It is an arithmetic number, because the mean of its divisors is an integer number (26727780).

Almost surely, 2203131014 is an apocalyptic number.

203131014 is an abundant number, since it is smaller than the sum of its proper divisors (224513466).

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

203131014 is a wasteful number, since it uses less digits than its factorization.

203131014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781875.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 203131014 is about 14252.4037972547. The cubic root of 203131014 is about 587.8394732788.

Adding to 203131014 its reverse (410131302), we get a palindrome (613262316).

The spelling of 203131014 in words is "two hundred three million, one hundred thirty-one thousand, fourteen".

Divisors: 1 2 3 6 19 38 57 114 1781851 3563702 5345553 10691106 33855169 67710338 101565507 203131014