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13221132031 = 641166712373
BaseRepresentation
bin11000101000000101…
…00111011011111111
31021010101220002120201
430110002213123333
5204034102211111
610023530424331
7645426524302
oct142402473377
937111802521
1013221132031
115674a911a8
12268b8920a7
131329147763
148d5c8cb39
15525a826c1
hex3140a76ff

13221132031 has 8 divisors (see below), whose sum is σ = 13250772144. Its totient is φ = 13191521280.

The previous prime is 13221132011. The next prime is 13221132053. The reversal of 13221132031 is 13023112231.

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 13221132031 - 217 = 13221000959 is a prime.

It is a super-2 number, since 2×132211320312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221132011) 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 7 ways as a sum of consecutive naturals, for example, 1062361 + ... + 1074733.

It is an arithmetic number, because the mean of its divisors is an integer number (1656346518).

Almost surely, 213221132031 is an apocalyptic number.

13221132031 is a deficient number, since it is larger than the sum of its proper divisors (29640113).

13221132031 is a wasteful number, since it uses less digits than its factorization.

13221132031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14681.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13221132031 its reverse (13023112231), we get a palindrome (26244244262).

The spelling of 13221132031 in words is "thirteen billion, two hundred twenty-one million, one hundred thirty-two thousand, thirty-one".

Divisors: 1 641 1667 12373 1068547 7931093 20625791 13221132031