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138231314 = 21353100313
BaseRepresentation
bin10000011110100…
…11111000010010
3100122002212201022
420033103320102
5240341400224
621414435442
73265642514
oct1017237022
9318085638
10138231314
1171034261
123a362b82
132283b2a0
1414503bb4
15c20765e
hex83d3e12

138231314 has 16 divisors (see below), whose sum is σ = 227512152. Its totient is φ = 62594688.

The previous prime is 138231239. The next prime is 138231319. The reversal of 138231314 is 413132831.

It can be written as a sum of positive squares in 4 ways, for example, as 73702225 + 64529089 = 8585^2 + 8033^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (138231319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48779 + ... + 51534.

Almost surely, 2138231314 is an apocalyptic number.

138231314 is a deficient number, since it is larger than the sum of its proper divisors (89280838).

138231314 is a wasteful number, since it uses less digits than its factorization.

138231314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100381.

The product of its digits is 1728, while the sum is 26.

The square root of 138231314 is about 11757.1813799056. The cubic root of 138231314 is about 517.0534958555.

The spelling of 138231314 in words is "one hundred thirty-eight million, two hundred thirty-one thousand, three hundred fourteen".

Divisors: 1 2 13 26 53 106 689 1378 100313 200626 1304069 2608138 5316589 10633178 69115657 138231314