13431231120 has 160 divisors (see below), whose sum is σ = 43105812480. Its totient is φ = 3455976960.

The previous prime is 13431231109. The next prime is 13431231127. The reversal of 13431231120 is 2113213431.

It is not an unprimeable number, because it can be changed into a prime (13431231127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2728021 + ... + 2732939.

It is an arithmetic number, because the mean of its divisors is an integer number (269411328).

Almost surely, 2^13431231120 is an apocalyptic number.

13431231120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13431231120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21552906240).

13431231120 is an abundant number, since it is smaller than the sum of its proper divisors (29674581360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13431231120 is a wasteful number, since it uses less digits than its factorization.

13431231120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5333 (or 5327 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13431231120 its reverse (2113213431), we get a palindrome (15544444551).

The spelling of 13431231120 in words is "thirteen billion, four hundred thirty-one million, two hundred thirty-one thousand, one hundred twenty".