13123031120 has 80 divisors (see below), whose sum is σ = 30801600000. Its totient is φ = 5199473664.

The previous prime is 13123031111. The next prime is 13123031123. The reversal of 13123031120 is 2113032131.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123031123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3803156 + ... + 3806604.

It is an arithmetic number, because the mean of its divisors is an integer number (385020000).

Almost surely, 2^13123031120 is an apocalyptic number.

13123031120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13123031120 is an abundant number, since it is smaller than the sum of its proper divisors (17678568880).

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

13123031120 is a wasteful number, since it uses less digits than its factorization.

13123031120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3900 (or 3894 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 13123031120 its reverse (2113032131), we get a palindrome (15236063251).

The spelling of 13123031120 in words is "thirteen billion, one hundred twenty-three million, thirty-one thousand, one hundred twenty".