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13001031439 = 118314239903
BaseRepresentation
bin11000001101110101…
…11111111100001111
31020120001201211022221
430012322333330033
5203111231001224
65550025120211
7640114641514
oct140672777417
936501654287
1013001031439
11557181a390
12262a029067
1312c2673316
148b495730b
155115a76e4
hex306ebff0f

13001031439 has 8 divisors (see below), whose sum is σ = 14353823232. Its totient is φ = 11676719640.

The previous prime is 13001031437. The next prime is 13001031481. The reversal of 13001031439 is 93413010031.

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

It is a cyclic number.

It is not a de Polignac number, because 13001031439 - 21 = 13001031437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13001031437) 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, 7119039 + ... + 7120864.

It is an arithmetic number, because the mean of its divisors is an integer number (1794227904).

Almost surely, 213001031439 is an apocalyptic number.

13001031439 is a deficient number, since it is larger than the sum of its proper divisors (1352791793).

13001031439 is a wasteful number, since it uses less digits than its factorization.

13001031439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14239997.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 13001031439 in words is "thirteen billion, one million, thirty-one thousand, four hundred thirty-nine".

Divisors: 1 11 83 913 14239903 156638933 1181911949 13001031439