131212331984 has 20 divisors (see below), whose sum is σ = 254652619716. Its totient is φ = 65495526912.

The previous prime is 131212331963. The next prime is 131212332011. The reversal of 131212331984 is 489133212131.

It can be written as a sum of positive squares in 2 ways, for example, as 60136771984 + 71075560000 = 245228^2 + 266600^2 .

It is a congruent number.

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, 6905159 + ... + 6924134.

Almost surely, 2^131212331984 is an apocalyptic number.

It is an amenable number.

131212331984 is a deficient number, since it is larger than the sum of its proper divisors (123440287732).

131212331984 is a wasteful number, since it uses less digits than its factorization.

131212331984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13829894 (or 13829888 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The spelling of 131212331984 in words is "one hundred thirty-one billion, two hundred twelve million, three hundred thirty-one thousand, nine hundred eighty-four".