131531445301 has 4 divisors (see below), whose sum is σ = 131535677952. Its totient is φ = 131527212652.

The previous prime is 131531445277. The next prime is 131531445313. The reversal of 131531445301 is 103544135131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 103544135131 = 53 ⋅1953662927.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131531445301 is a prime.

It is a super-2 number, since 2×131531445301² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131531445341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2069365 + ... + 2131978.

It is an arithmetic number, because the mean of its divisors is an integer number (32883919488).

Almost surely, 2^131531445301 is an apocalyptic number.

It is an amenable number.

131531445301 is a deficient number, since it is larger than the sum of its proper divisors (4232651).

131531445301 is an equidigital number, since it uses as much as digits as its factorization.

131531445301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232650.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 131531445301 in words is "one hundred thirty-one billion, five hundred thirty-one million, four hundred forty-five thousand, three hundred one".