131306521366 has 16 divisors (see below), whose sum is σ = 199844399664. Its totient is φ = 64697531904.

The previous prime is 131306521343. The next prime is 131306521447. The reversal of 131306521366 is 663125603131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1407240 + ... + 1497643.

It is an arithmetic number, because the mean of its divisors is an integer number (12490274979).

Almost surely, 2^131306521366 is an apocalyptic number.

131306521366 is a deficient number, since it is larger than the sum of its proper divisors (68537878298).

131306521366 is a wasteful number, since it uses less digits than its factorization.

131306521366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2905215.

The product of its (nonzero) digits is 58320, while the sum is 37.

The spelling of 131306521366 in words is "one hundred thirty-one billion, three hundred six million, five hundred twenty-one thousand, three hundred sixty-six".