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13022131 = 292511789
BaseRepresentation
bin110001101011…
…001110110011
3220111121000011
4301223032303
511313202011
61143035351
7215454253
oct61531663
926447004
1013022131
1173947a1
12443bb57
13290c305
141a2d963
151223621
hexc6b3b3

13022131 has 8 divisors (see below), whose sum is σ = 13532400. Its totient is φ = 12516000.

The previous prime is 13022129. The next prime is 13022143. The reversal of 13022131 is 13122031.

Adding to 13022131 its reverse (13122031), we get a palindrome (26144162).

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 13022131 - 21 = 13022129 is a prime.

It is a super-2 number, since 2×130221312 = 339151791562322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13022161) 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, 6385 + ... + 8173.

It is an arithmetic number, because the mean of its divisors is an integer number (1691550).

Almost surely, 213022131 is an apocalyptic number.

13022131 is a deficient number, since it is larger than the sum of its proper divisors (510269).

13022131 is a wasteful number, since it uses less digits than its factorization.

13022131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 13022131 is about 3608.6189879232. The cubic root of 13022131 is about 235.2668223276.

The spelling of 13022131 in words is "thirteen million, twenty-two thousand, one hundred thirty-one".

Divisors: 1 29 251 1789 7279 51881 449039 13022131