131065243505 has 16 divisors (see below), whose sum is σ = 179755006464. Its totient is φ = 89869116480.

The previous prime is 131065243483. The next prime is 131065243577. The reversal of 131065243505 is 505342560131.

It is not a de Polignac number, because 131065243505 - 2³² = 126770276209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800600 + ... + 950310.

It is an arithmetic number, because the mean of its divisors is an integer number (11234687904).

Almost surely, 2^131065243505 is an apocalyptic number.

It is an amenable number.

131065243505 is a deficient number, since it is larger than the sum of its proper divisors (48689762959).

131065243505 is a wasteful number, since it uses less digits than its factorization.

131065243505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174736.

The product of its (nonzero) digits is 54000, while the sum is 35.

The spelling of 131065243505 in words is "one hundred thirty-one billion, sixty-five million, two hundred forty-three thousand, five hundred five".