Search a number
-
+
13470149321 = 115981116141
BaseRepresentation
bin11001000101110001…
…00010101011001001
31021202202110111002022
430202320202223021
5210041324234241
610104344014225
7654542244236
oct144270425311
937682414068
1013470149321
115792603612
12273b161375
131368904a75
1491ad9078d
1553c87054b
hex322e22ac9

13470149321 has 4 divisors (see below), whose sum is σ = 13470381444. Its totient is φ = 13469917200.

The previous prime is 13470149317. The next prime is 13470149417. The reversal of 13470149321 is 12394107431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12394107431 = 17729065143.

It can be written as a sum of positive squares in 2 ways, for example, as 4181044921 + 9289104400 = 64661^2 + 96380^2 .

It is a cyclic number.

It is not a de Polignac number, because 13470149321 - 22 = 13470149317 is a prime.

It is a super-2 number, since 2×134701493212 (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 (13470149821) 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, 57911 + ... + 174051.

It is an arithmetic number, because the mean of its divisors is an integer number (3367595361).

Almost surely, 213470149321 is an apocalyptic number.

It is an amenable number.

13470149321 is a deficient number, since it is larger than the sum of its proper divisors (232123).

13470149321 is a wasteful number, since it uses less digits than its factorization.

13470149321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232122.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 13470149321 in words is "thirteen billion, four hundred seventy million, one hundred forty-nine thousand, three hundred twenty-one".

Divisors: 1 115981 116141 13470149321