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12131622613 = 111949565867
BaseRepresentation
bin10110100110001100…
…11101111011010101
31011022110210021122001
423103012131323111
5144321143410423
65323450435301
7606430043065
oct132306357325
934273707561
1012131622613
115165a916a0
122426a32b31
1311b44caa26
148312c13a5
154b00becad
hex2d319ded5

12131622613 has 8 divisors (see below), whose sum is σ = 13241311200. Its totient is φ = 11023069680.

The previous prime is 12131622611. The next prime is 12131622647. The reversal of 12131622613 is 31622613121.

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 12131622613 - 21 = 12131622611 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 (12131622611) 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, 261495 + ... + 304372.

It is an arithmetic number, because the mean of its divisors is an integer number (1655163900).

Almost surely, 212131622613 is an apocalyptic number.

It is an amenable number.

12131622613 is a deficient number, since it is larger than the sum of its proper divisors (1109688587).

12131622613 is a wasteful number, since it uses less digits than its factorization.

12131622613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567827.

The product of its digits is 2592, while the sum is 28.

The spelling of 12131622613 in words is "twelve billion, one hundred thirty-one million, six hundred twenty-two thousand, six hundred thirteen".

Divisors: 1 11 1949 21439 565867 6224537 1102874783 12131622613