131223202012 has 48 divisors (see below), whose sum is σ = 266961784320. Its totient is φ = 55271414592.

The previous prime is 131223201937. The next prime is 131223202021. The reversal of 131223202012 is 210202322131.

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, 9040753 + ... + 9055255.

It is an arithmetic number, because the mean of its divisors is an integer number (5561703840).

Almost surely, 2^131223202012 is an apocalyptic number.

It is an amenable number.

131223202012 is an abundant number, since it is smaller than the sum of its proper divisors (135738582308).

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

131223202012 is a wasteful number, since it uses less digits than its factorization.

131223202012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20050 (or 20048 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 131223202012 its reverse (210202322131), we get a palindrome (341425524143).

The spelling of 131223202012 in words is "one hundred thirty-one billion, two hundred twenty-three million, two hundred two thousand, twelve".