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13013123202 = 23480327921
BaseRepresentation
bin11000001111010010…
…01000000010000010
31020120220111011010000
430013221020002002
5203122324420302
65551140220430
7640322502462
oct140751100202
936526434100
1013013123202
115578629082
12263209a716
1312c5018001
148b63c3ba2
1551269531c
hex307a48082

13013123202 has 20 divisors (see below), whose sum is σ = 29159035686. Its totient is φ = 4337707680.

The previous prime is 13013123191. The next prime is 13013123243. The reversal of 13013123202 is 20232131031.

13013123202 is a `hidden beast` number, since 1 + 30 + 1 + 312 + 320 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11223071721 + 1790051481 = 105939^2 + 42309^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 40163799 + ... + 40164122.

Almost surely, 213013123202 is an apocalyptic number.

13013123202 is an abundant number, since it is smaller than the sum of its proper divisors (16145912484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13013123202 is an equidigital number, since it uses as much as digits as its factorization.

13013123202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80327935 (or 80327926 counting only the distinct ones).

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

Adding to 13013123202 its reverse (20232131031), we get a palindrome (33245254233).

The spelling of 13013123202 in words is "thirteen billion, thirteen million, one hundred twenty-three thousand, two hundred two".

Divisors: 1 2 3 6 9 18 27 54 81 162 80327921 160655842 240983763 481967526 722951289 1445902578 2168853867 4337707734 6506561601 13013123202