12131312000 has 128 divisors (see below), whose sum is σ = 30464160480. Its totient is φ = 4803840000.

The previous prime is 12131311999. The next prime is 12131312077. The reversal of 12131312000 is 21313121.

It is a tau number, because it is divible by the number of its divisors (128).

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, 1612247 + ... + 1619753.

Almost surely, 2^12131312000 is an apocalyptic number.

12131312000 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 12131312000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15232080240).

12131312000 is an abundant number, since it is smaller than the sum of its proper divisors (18332848480).

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

12131312000 is an equidigital number, since it uses as much as digits as its factorization.

12131312000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7637 (or 7615 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 12131312000 its reverse (21313121), we get a palindrome (12152625121).

The spelling of 12131312000 in words is "twelve billion, one hundred thirty-one million, three hundred twelve thousand".