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13211333131 = 175569139547
BaseRepresentation
bin11000100110111010…
…01111001000001011
31021002201110021000111
430103131033020023
5204024100130011
610022540415151
7645250323133
oct142335171013
937081407014
1013211333131
11566a4a9137
1226885474b7
1313270c65a9
148d485bac3
15524c99121
hex31374f20b

13211333131 has 8 divisors (see below), whose sum is σ = 13991082480. Its totient is φ = 12431874048.

The previous prime is 13211333123. The next prime is 13211333141. The reversal of 13211333131 is 13133311231.

13211333131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13211333131 - 23 = 13211333123 is a prime.

It is a super-2 number, since 2×132113331312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13211333111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24900 + ... + 164446.

It is an arithmetic number, because the mean of its divisors is an integer number (1748885310).

Almost surely, 213211333131 is an apocalyptic number.

13211333131 is a deficient number, since it is larger than the sum of its proper divisors (779749349).

13211333131 is a wasteful number, since it uses less digits than its factorization.

13211333131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145133.

The product of its digits is 486, while the sum is 22.

Adding to 13211333131 its reverse (13133311231), we get a palindrome (26344644362).

The spelling of 13211333131 in words is "thirteen billion, two hundred eleven million, three hundred thirty-three thousand, one hundred thirty-one".

Divisors: 1 17 5569 94673 139547 2372299 777137243 13211333131