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13412121431 = 79169773689
BaseRepresentation
bin11000111110110110…
…01011101101010111
31021121201021100210012
430133123023231113
5204432000341211
610054512150435
7653236102562
oct143733135527
937551240705
1013412121431
11576287a385
12272383841b
131359898637
149133a74d9
1553770bd8b
hex31f6cbb57

13412121431 has 4 divisors (see below), whose sum is σ = 13581895200. Its totient is φ = 13242347664.

The previous prime is 13412121407. The next prime is 13412121469.

13412121431 is nontrivially palindromic in base 10.

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 13412121431 - 218 = 13411859287 is a prime.

It is a super-2 number, since 2×134121214312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13412121397 and 13412121406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13412120431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84886766 + ... + 84886923.

It is an arithmetic number, because the mean of its divisors is an integer number (3395473800).

Almost surely, 213412121431 is an apocalyptic number.

13412121431 is a deficient number, since it is larger than the sum of its proper divisors (169773769).

13412121431 is an equidigital number, since it uses as much as digits as its factorization.

13412121431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169773768.

The product of its digits is 576, while the sum is 23.

The spelling of 13412121431 in words is "thirteen billion, four hundred twelve million, one hundred twenty-one thousand, four hundred thirty-one".

Divisors: 1 79 169773689 13412121431