131132221013 has 4 divisors (see below), whose sum is σ = 131234749440. Its totient is φ = 131029692588.

The previous prime is 131132221007. The next prime is 131132221019. The reversal of 131132221013 is 310122231131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 310122231131 = 29 ⋅10693870039.

It is an interprime number because it is at equal distance from previous prime (131132221007) and next prime (131132221019).

It is a cyclic number.

It is not a de Polignac number, because 131132221013 - 2³² = 126837253717 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 (131132221019) 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, 51262295 + ... + 51264852.

It is an arithmetic number, because the mean of its divisors is an integer number (32808687360).

Almost surely, 2^131132221013 is an apocalyptic number.

It is an amenable number.

131132221013 is a deficient number, since it is larger than the sum of its proper divisors (102528427).

131132221013 is a wasteful number, since it uses less digits than its factorization.

131132221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102528426.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 131132221013 its reverse (310122231131), we get a palindrome (441254452144).

The spelling of 131132221013 in words is "one hundred thirty-one billion, one hundred thirty-two million, two hundred twenty-one thousand, thirteen".