131731355306 has 8 divisors (see below), whose sum is σ = 197999472384. Its totient is φ = 65731531180.

The previous prime is 131731355303. The next prime is 131731355339. The reversal of 131731355306 is 603553137131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×131731355306² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131731355306.

It is not an unprimeable number, because it can be changed into a prime (131731355303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67072010 + ... + 67073973.

It is an arithmetic number, because the mean of its divisors is an integer number (24749934048).

Almost surely, 2^131731355306 is an apocalyptic number.

131731355306 is a deficient number, since it is larger than the sum of its proper divisors (66268117078).

131731355306 is a wasteful number, since it uses less digits than its factorization.

131731355306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134146476.

The product of its (nonzero) digits is 85050, while the sum is 38.

The spelling of 131731355306 in words is "one hundred thirty-one billion, seven hundred thirty-one million, three hundred fifty-five thousand, three hundred six".