131652606781 has 4 divisors (see below), whose sum is σ = 131656313632. Its totient is φ = 131648899932.

The previous prime is 131652606739. The next prime is 131652606817. The reversal of 131652606781 is 187606256131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131652606781 - 2¹⁵ = 131652574013 is a prime.

It is a super-2 number, since 2×131652606781² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131652606721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1799631 + ... + 1871356.

It is an arithmetic number, because the mean of its divisors is an integer number (32914078408).

Almost surely, 2^131652606781 is an apocalyptic number.

It is an amenable number.

131652606781 is a deficient number, since it is larger than the sum of its proper divisors (3706851).

131652606781 is an equidigital number, since it uses as much as digits as its factorization.

131652606781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3706850.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 131652606781 in words is "one hundred thirty-one billion, six hundred fifty-two million, six hundred six thousand, seven hundred eighty-one".