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7000138131 = 37595649829
BaseRepresentation
bin1101000010011110…
…11010000110010011
3200001211222212021020
412201033122012103
5103314013410011
63114341130523
7335320122660
oct64117320623
920054885236
107000138131
112a72439428
1214343b9a43
13877353a8c
144a5994a67
152ae845006
hex1a13da193

7000138131 has 16 divisors (see below), whose sum is σ = 10847673600. Its totient is φ = 3932280288.

The previous prime is 7000138129. The next prime is 7000138153. The reversal of 7000138131 is 1318310007.

It is not a de Polignac number, because 7000138131 - 21 = 7000138129 is a prime.

It is a super-2 number, since 2×70001381312 = 98003867706160346322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7000138121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2823676 + ... + 2826153.

It is an arithmetic number, because the mean of its divisors is an integer number (677979600).

Almost surely, 27000138131 is an apocalyptic number.

7000138131 is a deficient number, since it is larger than the sum of its proper divisors (3847535469).

7000138131 is a wasteful number, since it uses less digits than its factorization.

7000138131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5649898.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 7000138131 is about 83666.8281399504. The cubic root of 7000138131 is about 1912.9437653133.

Adding to 7000138131 its reverse (1318310007), we get a palindrome (8318448138).

The spelling of 7000138131 in words is "seven billion, one hundred thirty-eight thousand, one hundred thirty-one".

Divisors: 1 3 7 21 59 177 413 1239 5649829 16949487 39548803 118646409 333339911 1000019733 2333379377 7000138131