131122565 has 8 divisors (see below), whose sum is σ = 179825280. Its totient is φ = 89912592.

The previous prime is 131122559. The next prime is 131122571. The reversal of 131122565 is 565221131.

It is an interprime number because it is at equal distance from previous prime (131122559) and next prime (131122571).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131122565 - 2⁶ = 131122501 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1873145 + ... + 1873214.

It is an arithmetic number, because the mean of its divisors is an integer number (22478160).

Almost surely, 2^131122565 is an apocalyptic number.

It is an amenable number.

131122565 is a deficient number, since it is larger than the sum of its proper divisors (48702715).

131122565 is an equidigital number, since it uses as much as digits as its factorization.

131122565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3746371.

The product of its digits is 1800, while the sum is 26.

The square root of 131122565 is about 11450.8761673507. The cubic root of 131122565 is about 508.0336496300.

Adding to 131122565 its reverse (565221131), we get a palindrome (696343696).

The spelling of 131122565 in words is "one hundred thirty-one million, one hundred twenty-two thousand, five hundred sixty-five".