131131110212 has 6 divisors (see below), whose sum is σ = 229479442878. Its totient is φ = 65565555104.

The previous prime is 131131110211. The next prime is 131131110217. The reversal of 131131110212 is 212011131131.

It can be written as a sum of positive squares in only one way, i.e., 122903531776 + 8227578436 = 350576^2 + 90706^2 .

It is not an unprimeable number, because it can be changed into a prime (131131110211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16391388773 + ... + 16391388780.

It is an arithmetic number, because the mean of its divisors is an integer number (38246573813).

Almost surely, 2^131131110212 is an apocalyptic number.

It is an amenable number.

131131110212 is a deficient number, since it is larger than the sum of its proper divisors (98348332666).

131131110212 is a wasteful number, since it uses less digits than its factorization.

131131110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32782777557 (or 32782777555 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 131131110212 its reverse (212011131131), we get a palindrome (343142241343).

The spelling of 131131110212 in words is "one hundred thirty-one billion, one hundred thirty-one million, one hundred ten thousand, two hundred twelve".