13231482781 has 8 divisors (see below), whose sum is σ = 14435281728. Its totient is φ = 12027840000.

The previous prime is 13231482767. The next prime is 13231482787. The reversal of 13231482781 is 18728413231.

13231482781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13231482781 - 2⁵ = 13231482749 is a prime.

It is a super-2 number, since 2×13231482781² (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 (13231482787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203856 + ... + 260806.

It is an arithmetic number, because the mean of its divisors is an integer number (1804410216).

Almost surely, 2^13231482781 is an apocalyptic number.

13231482781 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13231482781 is a deficient number, since it is larger than the sum of its proper divisors (1203798947).

13231482781 is a wasteful number, since it uses less digits than its factorization.

13231482781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78083.

The product of its digits is 64512, while the sum is 40.

The spelling of 13231482781 in words is "thirteen billion, two hundred thirty-one million, four hundred eighty-two thousand, seven hundred eighty-one".