13123111000 has 32 divisors (see below), whose sum is σ = 30708082080. Its totient is φ = 5249244000.

The previous prime is 13123110997. The next prime is 13123111021. The reversal of 13123111000 is 11132131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6560556 + ... + 6562555.

It is an arithmetic number, because the mean of its divisors is an integer number (959627565).

Almost surely, 2^13123111000 is an apocalyptic number.

13123111000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13123111000 is an abundant number, since it is smaller than the sum of its proper divisors (17584971080).

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

13123111000 is a wasteful number, since it uses less digits than its factorization.

13123111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13123132 (or 13123118 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 13123111000 its reverse (11132131), we get a palindrome (13134243131).

The spelling of 13123111000 in words is "thirteen billion, one hundred twenty-three million, one hundred eleven thousand".