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7131445234 = 215013237509
BaseRepresentation
bin1101010010001000…
…10011011111110010
3200102000001221202021
412221010103133302
5104101122221414
63135351342054
7341503166344
oct65104233762
920360057667
107131445234
11302a5733a1
12147038192a
138986094a4
144b91b5294
152bb130c24
hex1a91137f2

7131445234 has 8 divisors (see below), whose sum is σ = 10697925420. Its totient is φ = 3565470096.

The previous prime is 7131445207. The next prime is 7131445259. The reversal of 7131445234 is 4325441317.

It can be written as a sum of positive squares in 2 ways, for example, as 6440544009 + 690901225 = 80253^2 + 26285^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×71314452342 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7131445234.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88729 + ... + 148780.

Almost surely, 27131445234 is an apocalyptic number.

7131445234 is a deficient number, since it is larger than the sum of its proper divisors (3566480186).

7131445234 is a wasteful number, since it uses less digits than its factorization.

7131445234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252524.

The product of its digits is 40320, while the sum is 34.

The square root of 7131445234 is about 84447.8847218804. The cubic root of 7131445234 is about 1924.8306127674.

The spelling of 7131445234 in words is "seven billion, one hundred thirty-one million, four hundred forty-five thousand, two hundred thirty-four".

Divisors: 1 2 15013 30026 237509 475018 3565722617 7131445234