131330305408 has 32 divisors (see below), whose sum is σ = 261676977120. Its totient is φ = 65654515200.

The previous prime is 131330305397. The next prime is 131330305439. The reversal of 131330305408 is 804503033131.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 131330305408.

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 3 ways as a sum of consecutive naturals, for example, 741993 + ... + 901783.

It is an arithmetic number, because the mean of its divisors is an integer number (8177405535).

Almost surely, 2^131330305408 is an apocalyptic number.

It is an amenable number.

131330305408 is a deficient number, since it is larger than the sum of its proper divisors (130346671712).

131330305408 is an equidigital number, since it uses as much as digits as its factorization.

131330305408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166226 (or 166214 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 131330305408 its reverse (804503033131), we get a palindrome (935833338539).

The spelling of 131330305408 in words is "one hundred thirty-one billion, three hundred thirty million, three hundred five thousand, four hundred eight".