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13531079 = 137283349
BaseRepresentation
bin110011100111…
…011111000111
3221110110011002
4303213133013
511430443304
61202003515
7223004132
oct63473707
927413132
1013531079
117702111
12464659b
132a59b73
141b23219
1512c431e
hexce77c7

13531079 has 8 divisors (see below), whose sum is σ = 13717200. Its totient is φ = 13346496.

The previous prime is 13531073. The next prime is 13531093. The reversal of 13531079 is 97013531.

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 13531079 - 28 = 13530823 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 (13531073) 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, 38597 + ... + 38945.

It is an arithmetic number, because the mean of its divisors is an integer number (1714650).

Almost surely, 213531079 is an apocalyptic number.

13531079 is a deficient number, since it is larger than the sum of its proper divisors (186121).

13531079 is a wasteful number, since it uses less digits than its factorization.

13531079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 13531079 is about 3678.4614990509. The cubic root of 13531079 is about 238.2927393765.

The spelling of 13531079 in words is "thirteen million, five hundred thirty-one thousand, seventy-nine".

Divisors: 1 137 283 349 38771 47813 98767 13531079