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7146993331 = 131181383787
BaseRepresentation
bin1101010011111111…
…00111011010110011
3200110002022212201201
412221333213122303
5104114112241311
63141104512031
7342052304152
oct65177473263
920402285651
107146993331
113038322965
12147561b617
1389b8c144a
144bb2a1599
152bc6a29c1
hex1a9fe76b3

7146993331 has 16 divisors (see below), whose sum is σ = 7269470208. Its totient is φ = 7025896800.

The previous prime is 7146993319. The next prime is 7146993353. The reversal of 7146993331 is 1333996417.

It is not a de Polignac number, because 7146993331 - 215 = 7146960563 is a prime.

It is a super-2 number, since 2×71469933312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7146993311) 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, 9080920 + ... + 9081706.

It is an arithmetic number, because the mean of its divisors is an integer number (454341888).

Almost surely, 27146993331 is an apocalyptic number.

7146993331 is a deficient number, since it is larger than the sum of its proper divisors (122476877).

7146993331 is a wasteful number, since it uses less digits than its factorization.

7146993331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482.

The product of its digits is 367416, while the sum is 46.

The square root of 7146993331 is about 84539.8919504869. The cubic root of 7146993331 is about 1926.2284467713.

The spelling of 7146993331 in words is "seven billion, one hundred forty-six million, nine hundred ninety-three thousand, three hundred thirty-one".

Divisors: 1 131 181 383 787 23711 50173 69323 103097 142447 301421 9081313 18660557 39486151 54557201 7146993331