131353601865 has 16 divisors (see below), whose sum is σ = 213727896000. Its totient is φ = 68867876672.

The previous prime is 131353601831. The next prime is 131353601879. The reversal of 131353601865 is 568106353131.

It is a cyclic number.

It is not a de Polignac number, because 131353601865 - 2¹⁰ = 131353600841 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 74210190 + ... + 74211959.

It is an arithmetic number, because the mean of its divisors is an integer number (13357993500).

Almost surely, 2^131353601865 is an apocalyptic number.

131353601865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131353601865 is a deficient number, since it is larger than the sum of its proper divisors (82374294135).

131353601865 is a wasteful number, since it uses less digits than its factorization.

131353601865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148422216.

The product of its (nonzero) digits is 194400, while the sum is 42.

Adding to 131353601865 its reverse (568106353131), we get a palindrome (699459954996).

The spelling of 131353601865 in words is "one hundred thirty-one billion, three hundred fifty-three million, six hundred one thousand, eight hundred sixty-five".