131024512321 has 4 divisors (see below), whose sum is σ = 136721230272. Its totient is φ = 125327794372.

The previous prime is 131024512313. The next prime is 131024512337. The reversal of 131024512321 is 123215420131.

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 131024512321 - 2³ = 131024512313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131024512361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2848358941 + ... + 2848358986.

It is an arithmetic number, because the mean of its divisors is an integer number (34180307568).

Almost surely, 2^131024512321 is an apocalyptic number.

It is an amenable number.

131024512321 is a deficient number, since it is larger than the sum of its proper divisors (5696717951).

131024512321 is an equidigital number, since it uses as much as digits as its factorization.

131024512321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5696717950.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 131024512321 its reverse (123215420131), we get a palindrome (254239932452).

The spelling of 131024512321 in words is "one hundred thirty-one billion, twenty-four million, five hundred twelve thousand, three hundred twenty-one".