131013311212 has 12 divisors (see below), whose sum is σ = 262026622480. Its totient is φ = 56148561936.

The previous prime is 131013311203. The next prime is 131013311243. The reversal of 131013311212 is 212113310131.

131013311212 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 131013311212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2339523387 + ... + 2339523442.

Almost surely, 2^131013311212 is an apocalyptic number.

It is an amenable number.

131013311212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131013311212 is a wasteful number, since it uses less digits than its factorization.

131013311212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4679046840 (or 4679046838 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 131013311212 its reverse (212113310131), we get a palindrome (343126621343).

It can be divided in two parts, 131013 and 311212, that added together give a square (442225 = 665²).

The spelling of 131013311212 in words is "one hundred thirty-one billion, thirteen million, three hundred eleven thousand, two hundred twelve".