131206222828 has 12 divisors (see below), whose sum is σ = 230030657752. Its totient is φ = 65483177760.

The previous prime is 131206222793. The next prime is 131206222841. The reversal of 131206222828 is 828222602131.

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, 29980953 + ... + 29985328.

Almost surely, 2^131206222828 is an apocalyptic number.

It is an amenable number.

131206222828 is a deficient number, since it is larger than the sum of its proper divisors (98824434924).

131206222828 is a wasteful number, since it uses less digits than its factorization.

131206222828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59966832 (or 59966830 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

Adding to 131206222828 its reverse (828222602131), we get a palindrome (959428824959).

The spelling of 131206222828 in words is "one hundred thirty-one billion, two hundred six million, two hundred twenty-two thousand, eight hundred twenty-eight".