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13201022031 = 34400340677
BaseRepresentation
bin11000100101101011…
…11001110001001111
31021002000001101211220
430102311321301033
5204013430201111
610021531414423
7645063556461
oct142265716117
937060041756
1013201022031
1156646a626a
122684bb4413
131324c26252
148d3336131
15523e0de06
hex312d79c4f

13201022031 has 4 divisors (see below), whose sum is σ = 17601362712. Its totient is φ = 8800681352.

The previous prime is 13201021903. The next prime is 13201022033. The reversal of 13201022031 is 13022010231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13201022031 - 27 = 13201021903 is a prime.

It is a super-2 number, since 2×132010220312 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13201022031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13201022033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2200170336 + ... + 2200170341.

It is an arithmetic number, because the mean of its divisors is an integer number (4400340678).

Almost surely, 213201022031 is an apocalyptic number.

13201022031 is a deficient number, since it is larger than the sum of its proper divisors (4400340681).

13201022031 is an equidigital number, since it uses as much as digits as its factorization.

13201022031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4400340680.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 13201022031 its reverse (13022010231), we get a palindrome (26223032262).

The spelling of 13201022031 in words is "thirteen billion, two hundred one million, twenty-two thousand, thirty-one".

Divisors: 1 3 4400340677 13201022031