131111252412 has 96 divisors (see below), whose sum is σ = 356734049280. Its totient is φ = 36706867200.

The previous prime is 131111252381. The next prime is 131111252479. The reversal of 131111252412 is 214252111131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 743289 + ... + 902607.

It is an arithmetic number, because the mean of its divisors is an integer number (3715979680).

Almost surely, 2^131111252412 is an apocalyptic number.

131111252412 is a gapful number since it is divisible by the number (12) 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 131111252412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178367024640).

131111252412 is an abundant number, since it is smaller than the sum of its proper divisors (225622796868).

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

131111252412 is a wasteful number, since it uses less digits than its factorization.

131111252412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159531 (or 159529 counting only the distinct ones).

The product of its digits is 480, while the sum is 24.

Adding to 131111252412 its reverse (214252111131), we get a palindrome (345363363543).

The spelling of 131111252412 in words is "one hundred thirty-one billion, one hundred eleven million, two hundred fifty-two thousand, four hundred twelve".