131331203212 has 24 divisors (see below), whose sum is σ = 251827732800. Its totient is φ = 59433018960.

The previous prime is 131331203209. The next prime is 131331203257. The reversal of 131331203212 is 212302133131.

It is a super-2 number, since 2×131331203212² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6564462 + ... + 6584437.

It is an arithmetic number, because the mean of its divisors is an integer number (10492822200).

Almost surely, 2^131331203212 is an apocalyptic number.

It is an amenable number.

131331203212 is a deficient number, since it is larger than the sum of its proper divisors (120496529588).

131331203212 is a wasteful number, since it uses less digits than its factorization.

131331203212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13149141 (or 13149139 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 131331203212 its reverse (212302133131), we get a palindrome (343633336343).

The spelling of 131331203212 in words is "one hundred thirty-one billion, three hundred thirty-one million, two hundred three thousand, two hundred twelve".