131621500303 has 4 divisors (see below), whose sum is σ = 132107188768. Its totient is φ = 131135811840.

The previous prime is 131621500301. The next prime is 131621500313. The reversal of 131621500303 is 303005126131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131621500303 - 2¹ = 131621500301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131621500301) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 242843826 + ... + 242844367.

It is an arithmetic number, because the mean of its divisors is an integer number (33026797192).

Almost surely, 2^131621500303 is an apocalyptic number.

131621500303 is a deficient number, since it is larger than the sum of its proper divisors (485688465).

131621500303 is an equidigital number, since it uses as much as digits as its factorization.

131621500303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485688464.

The product of its (nonzero) digits is 1620, while the sum is 25.

Adding to 131621500303 its reverse (303005126131), we get a palindrome (434626626434).

The spelling of 131621500303 in words is "one hundred thirty-one billion, six hundred twenty-one million, five hundred thousand, three hundred three".