13023131112 has 96 divisors (see below), whose sum is σ = 38140502400. Its totient is φ = 3998740992.

The previous prime is 13023131101. The next prime is 13023131113. The reversal of 13023131112 is 21113132031.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (13023131113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55662 + ... + 170717.

It is an arithmetic number, because the mean of its divisors is an integer number (397296900).

Almost surely, 2^13023131112 is an apocalyptic number.

13023131112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13023131112 is an abundant number, since it is smaller than the sum of its proper divisors (25117371288).

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

13023131112 is a wasteful number, since it uses less digits than its factorization.

13023131112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226455 (or 226448 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 13023131112 its reverse (21113132031), we get a palindrome (34136263143).

The spelling of 13023131112 in words is "thirteen billion, twenty-three million, one hundred thirty-one thousand, one hundred twelve".