12131311000 has 64 divisors (see below), whose sum is σ = 28991364480. Its totient is φ = 4749260800.

The previous prime is 12131310991. The next prime is 12131311013. The reversal of 12131311000 is 11313121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82057 + ... + 176056.

It is an arithmetic number, because the mean of its divisors is an integer number (452990070).

Almost surely, 2^12131311000 is an apocalyptic number.

12131311000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12131311000 is an abundant number, since it is smaller than the sum of its proper divisors (16860053480).

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

12131311000 is a wasteful number, since it uses less digits than its factorization.

12131311000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258181 (or 258167 counting only the distinct ones).

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

Adding to 12131311000 its reverse (11313121), we get a palindrome (12142624121).

The spelling of 12131311000 in words is "twelve billion, one hundred thirty-one million, three hundred eleven thousand".