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13251331889 = 31617007579
BaseRepresentation
bin11000101011101011…
…10100011100110001
31021012111201101222222
430111311310130301
5204114320110024
610030530010425
7646244314445
oct142565643461
937174641888
1013251331889
115690038864
122699a16a15
13133248c6b3
148d9cb0825
1552854a85e
hex315d74731

13251331889 has 8 divisors (see below), whose sum is σ = 13903038720. Its totient is φ = 12613640400.

The previous prime is 13251331879. The next prime is 13251331909. The reversal of 13251331889 is 98813315231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13251331889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13251331879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3501899 + ... + 3505680.

It is an arithmetic number, because the mean of its divisors is an integer number (1737879840).

Almost surely, 213251331889 is an apocalyptic number.

It is an amenable number.

13251331889 is a deficient number, since it is larger than the sum of its proper divisors (651706831).

13251331889 is an equidigital number, since it uses as much as digits as its factorization.

13251331889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7007671.

The product of its digits is 155520, while the sum is 44.

The spelling of 13251331889 in words is "thirteen billion, two hundred fifty-one million, three hundred thirty-one thousand, eight hundred eighty-nine".

Divisors: 1 31 61 1891 7007579 217234949 427462319 13251331889