131561331416 has 64 divisors (see below), whose sum is σ = 266256460800. Its totient is φ = 60711026688.

The previous prime is 131561331413. The next prime is 131561331431. The reversal of 131561331416 is 614133165131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131561331413) 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 15 ways as a sum of consecutive naturals, for example, 18686825 + ... + 18693863.

It is an arithmetic number, because the mean of its divisors is an integer number (4160257200).

Almost surely, 2^131561331416 is an apocalyptic number.

It is an amenable number.

131561331416 is an abundant number, since it is smaller than the sum of its proper divisors (134695129384).

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

131561331416 is a wasteful number, since it uses less digits than its factorization.

131561331416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9708 (or 9704 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

Adding to 131561331416 its reverse (614133165131), we get a palindrome (745694496547).

The spelling of 131561331416 in words is "one hundred thirty-one billion, five hundred sixty-one million, three hundred thirty-one thousand, four hundred sixteen".