131721156208 has 40 divisors (see below), whose sum is σ = 271411395920. Its totient is φ = 61750978560.

The previous prime is 131721156191. The next prime is 131721156209. The reversal of 131721156208 is 802651127131.

131721156208 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131721156209) by changing a digit.

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, 2203983 + ... + 2262958.

It is an arithmetic number, because the mean of its divisors is an integer number (6785284898).

Almost surely, 2^131721156208 is an apocalyptic number.

It is an amenable number.

131721156208 is an abundant number, since it is smaller than the sum of its proper divisors (139690239712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131721156208 is a wasteful number, since it uses less digits than its factorization.

131721156208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4467065 (or 4467059 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 131721156208 in words is "one hundred thirty-one billion, seven hundred twenty-one million, one hundred fifty-six thousand, two hundred eight".