13445201231 has 16 divisors (see below), whose sum is σ = 16773123840. Its totient is φ = 10470358080.

The previous prime is 13445201221. The next prime is 13445201233. The reversal of 13445201231 is 13210254431.

It is a happy number.

It is not a de Polignac number, because 13445201231 - 2⁶ = 13445201167 is a prime.

It is a super-2 number, since 2×13445201231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13445201231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13445201233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74900 + ... + 180278.

It is an arithmetic number, because the mean of its divisors is an integer number (1048320240).

Almost surely, 2^13445201231 is an apocalyptic number.

13445201231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13445201231 is a deficient number, since it is larger than the sum of its proper divisors (3327922609).

13445201231 is a wasteful number, since it uses less digits than its factorization.

13445201231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107054.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 13445201231 its reverse (13210254431), we get a palindrome (26655455662).

The spelling of 13445201231 in words is "thirteen billion, four hundred forty-five million, two hundred one thousand, two hundred thirty-one".