131311133212 has 48 divisors (see below), whose sum is σ = 268939213312. Its totient is φ = 54924609600.

The previous prime is 131311133201. The next prime is 131311133221. The reversal of 131311133212 is 212331113131.

It is a super-2 number, since 2×131311133212² (a number of 23 digits) contains 22 as substring.

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, 1526962 + ... + 1610662.

Almost surely, 2^131311133212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131311133212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134469606656).

131311133212 is an abundant number, since it is smaller than the sum of its proper divisors (137628080100).

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

131311133212 is a wasteful number, since it uses less digits than its factorization.

131311133212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85058 (or 85056 counting only the distinct ones).

The product of its digits is 324, while the sum is 22.

Adding to 131311133212 its reverse (212331113131), we get a palindrome (343642246343).

The spelling of 131311133212 in words is "one hundred thirty-one billion, three hundred eleven million, one hundred thirty-three thousand, two hundred twelve".