13134444231 has 4 divisors (see below), whose sum is σ = 17512592312. Its totient is φ = 8756296152.

The previous prime is 13134444229. The next prime is 13134444247. The reversal of 13134444231 is 13244443131.

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

It is not a de Polignac number, because 13134444231 - 2¹ = 13134444229 is a prime.

It is a super-2 number, since 2×13134444231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13134444221) 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, 2189074036 + ... + 2189074041.

It is an arithmetic number, because the mean of its divisors is an integer number (4378148078).

Almost surely, 2^13134444231 is an apocalyptic number.

13134444231 is a deficient number, since it is larger than the sum of its proper divisors (4378148081).

13134444231 is an equidigital number, since it uses as much as digits as its factorization.

13134444231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4378148080.

The product of its digits is 13824, while the sum is 30.

Adding to 13134444231 its reverse (13244443131), we get a palindrome (26378887362).

The spelling of 13134444231 in words is "thirteen billion, one hundred thirty-four million, four hundred forty-four thousand, two hundred thirty-one".