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13122302013 = 322864950893
BaseRepresentation
bin11000011100010011…
…00111000000111101
31020212111221000021200
430032021213000331
5203333302131023
610010040250113
7643116504162
oct141611470075
936774830250
1013122302013
1156242197a7
122662770939
131311823662
148c6ac4069
1551c05e743
hex30e26703d

13122302013 has 12 divisors (see below), whose sum is σ = 18955470300. Its totient is φ = 8747724096.

The previous prime is 13122302003. The next prime is 13122302021. The reversal of 13122302013 is 31020322131.

It can be written as a sum of positive squares in 2 ways, for example, as 1875063204 + 11247238809 = 43302^2 + 106053^2 .

It is not a de Polignac number, because 13122302013 - 25 = 13122301981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122302003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232395 + ... + 283287.

It is an arithmetic number, because the mean of its divisors is an integer number (1579622525).

Almost surely, 213122302013 is an apocalyptic number.

It is an amenable number.

13122302013 is a deficient number, since it is larger than the sum of its proper divisors (5833168287).

13122302013 is a wasteful number, since it uses less digits than its factorization.

13122302013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79548 (or 79545 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13122302013 its reverse (31020322131), we get a palindrome (44142624144).

The spelling of 13122302013 in words is "thirteen billion, one hundred twenty-two million, three hundred two thousand, thirteen".

Divisors: 1 3 9 28649 50893 85947 152679 257841 458037 1458033557 4374100671 13122302013