13120431344 has 10 divisors (see below), whose sum is σ = 25420835760. Its totient is φ = 6560215664.

The previous prime is 13120431307. The next prime is 13120431347. The reversal of 13120431344 is 44313402131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120431347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410013464 + ... + 410013495.

It is an arithmetic number, because the mean of its divisors is an integer number (2542083576).

Almost surely, 2^13120431344 is an apocalyptic number.

It is an amenable number.

13120431344 is a deficient number, since it is larger than the sum of its proper divisors (12300404416).

13120431344 is an equidigital number, since it uses as much as digits as its factorization.

13120431344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820026967 (or 820026961 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 13120431344 its reverse (44313402131), we get a palindrome (57433833475).

The spelling of 13120431344 in words is "thirteen billion, one hundred twenty million, four hundred thirty-one thousand, three hundred forty-four".