131215100404 has 24 divisors (see below), whose sum is σ = 241813792640. Its totient is φ = 62128353024.

The previous prime is 131215100399. The next prime is 131215100413. The reversal of 131215100404 is 404001512131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181149 + ... + 543364.

Almost surely, 2^131215100404 is an apocalyptic number.

It is an amenable number.

131215100404 is a deficient number, since it is larger than the sum of its proper divisors (110598692236).

131215100404 is a wasteful number, since it uses less digits than its factorization.

131215100404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726919 (or 726917 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 131215100404 its reverse (404001512131), we get a palindrome (535216612535).

The spelling of 131215100404 in words is "one hundred thirty-one billion, two hundred fifteen million, one hundred thousand, four hundred four".