131561035366 has 24 divisors (see below), whose sum is σ = 202107205080. Its totient is φ = 64228612896.

The previous prime is 131561035357. The next prime is 131561035387. The reversal of 131561035366 is 663530165131.

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 11 ways as a sum of consecutive naturals, for example, 17484081 + ... + 17491603.

It is an arithmetic number, because the mean of its divisors is an integer number (8421133545).

Almost surely, 2^131561035366 is an apocalyptic number.

131561035366 is a deficient number, since it is larger than the sum of its proper divisors (70546169714).

131561035366 is an equidigital number, since it uses as much as digits as its factorization.

131561035366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12340 (or 12297 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 40.

The spelling of 131561035366 in words is "one hundred thirty-one billion, five hundred sixty-one million, thirty-five thousand, three hundred sixty-six".