131556020704 has 24 divisors (see below), whose sum is σ = 261911044080. Its totient is φ = 65038930176.

The previous prime is 131556020681. The next prime is 131556020711. The reversal of 131556020704 is 407020655131.

131556020704 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 131556020704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23093364 + ... + 23099059.

It is an arithmetic number, because the mean of its divisors is an integer number (10912960170).

Almost surely, 2^131556020704 is an apocalyptic number.

It is an amenable number.

131556020704 is a deficient number, since it is larger than the sum of its proper divisors (130355023376).

131556020704 is an equidigital number, since it uses as much as digits as its factorization.

131556020704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46192522 (or 46192514 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

Adding to 131556020704 its reverse (407020655131), we get a palindrome (538576675835).

The spelling of 131556020704 in words is "one hundred thirty-one billion, five hundred fifty-six million, twenty thousand, seven hundred four".