131121321223 has 2 divisors, whose sum is σ = 131121321224. Its totient is φ = 131121321222.

The previous prime is 131121321197. The next prime is 131121321301. The reversal of 131121321223 is 322123121131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131121321223 - 2⁹ = 131121320711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131121321194 and 131121321203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131121328223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65560660611 + 65560660612.

It is an arithmetic number, because the mean of its divisors is an integer number (65560660612).

Almost surely, 2^131121321223 is an apocalyptic number.

131121321223 is a deficient number, since it is larger than the sum of its proper divisors (1).

131121321223 is an equidigital number, since it uses as much as digits as its factorization.

131121321223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 22.

Adding to 131121321223 its reverse (322123121131), we get a palindrome (453244442354).

The spelling of 131121321223 in words is "one hundred thirty-one billion, one hundred twenty-one million, three hundred twenty-one thousand, two hundred twenty-three".