131212021312 has 56 divisors (see below), whose sum is σ = 261651975552. Its totient is φ = 65284531200.

The previous prime is 131212021271. The next prime is 131212021327. The reversal of 131212021312 is 213120212131.

It is a self number, because there is not a number n which added to its sum of digits gives 131212021312.

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, 17350012 + ... + 17357572.

Almost surely, 2^131212021312 is an apocalyptic number.

It is an amenable number.

131212021312 is a deficient number, since it is larger than the sum of its proper divisors (130439954240).

131212021312 is a wasteful number, since it uses less digits than its factorization.

131212021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8867 (or 8857 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 131212021312 its reverse (213120212131), we get a palindrome (344332233443).

The spelling of 131212021312 in words is "one hundred thirty-one billion, two hundred twelve million, twenty-one thousand, three hundred twelve".