Search a number
-
+
13231200001 = 28147086121
BaseRepresentation
bin11000101001010010…
…00001011100000001
31021011002211121020111
430110221001130001
5204044141400001
610024530311321
7645611226055
oct142451013401
937132747214
1013231200001
11567a738438
122693128541
13132b261236
148d734dc65
155268c0851
hex314a41701

13231200001 has 4 divisors (see below), whose sum is σ = 13278286404. Its totient is φ = 13184113600.

The previous prime is 13231199987. The next prime is 13231200019. The reversal of 13231200001 is 10000213231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10156608400 + 3074591601 = 100780^2 + 55449^2 .

It is a cyclic number.

It is not a de Polignac number, because 13231200001 - 225 = 13197645569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13231201001) 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, 23542780 + ... + 23543341.

It is an arithmetic number, because the mean of its divisors is an integer number (3319571601).

Almost surely, 213231200001 is an apocalyptic number.

It is an amenable number.

13231200001 is a deficient number, since it is larger than the sum of its proper divisors (47086403).

13231200001 is an equidigital number, since it uses as much as digits as its factorization.

13231200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47086402.

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

Adding to 13231200001 its reverse (10000213231), we get a palindrome (23231413232).

The spelling of 13231200001 in words is "thirteen billion, two hundred thirty-one million, two hundred thousand, one".

Divisors: 1 281 47086121 13231200001