131021232231233 has 4 divisors (see below), whose sum is σ = 131022001851840. Its totient is φ = 131020462610628.

The previous prime is 131021232231209. The next prime is 131021232231289. The reversal of 131021232231233 is 332132232120131.

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 131021232231233 - 2¹⁴ = 131021232214849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131021232231196 and 131021232231205.

It is not an unprimeable number, because it can be changed into a prime (131026232231233) 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, 384554885 + ... + 384895442.

It is an arithmetic number, because the mean of its divisors is an integer number (32755500462960).

Almost surely, 2^{131021232231233} is an apocalyptic number.

It is an amenable number.

131021232231233 is a deficient number, since it is larger than the sum of its proper divisors (769620607).

131021232231233 is an equidigital number, since it uses as much as digits as its factorization.

131021232231233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769620606.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 131021232231233 its reverse (332132232120131), we get a palindrome (463153464351364).

The spelling of 131021232231233 in words is "one hundred thirty-one trillion, twenty-one billion, two hundred thirty-two million, two hundred thirty-one thousand, two hundred thirty-three".