131021423234313 has 4 divisors (see below), whose sum is σ = 174695230979088. Its totient is φ = 87347615489540.

The previous prime is 131021423234239. The next prime is 131021423234329. The reversal of 131021423234313 is 313432324120131.

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 131021423234313 - 2²⁰ = 131021422185737 is a prime.

It is a super-2 number, since 2×131021423234313² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131021423234113) 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, 21836903872383 + ... + 21836903872388.

It is an arithmetic number, because the mean of its divisors is an integer number (43673807744772).

Almost surely, 2^{131021423234313} is an apocalyptic number.

It is an amenable number.

131021423234313 is a deficient number, since it is larger than the sum of its proper divisors (43673807744775).

131021423234313 is an equidigital number, since it uses as much as digits as its factorization.

131021423234313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43673807744774.

The product of its (nonzero) digits is 31104, while the sum is 33.

Adding to 131021423234313 its reverse (313432324120131), we get a palindrome (444453747354444).

The spelling of 131021423234313 in words is "one hundred thirty-one trillion, twenty-one billion, four hundred twenty-three million, two hundred thirty-four thousand, three hundred thirteen".