131031213223 has 2 divisors, whose sum is σ = 131031213224. Its totient is φ = 131031213222.

The previous prime is 131031213197. The next prime is 131031213227. The reversal of 131031213223 is 322312130131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131031213223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131031213194 and 131031213203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131031213227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65515606611 + 65515606612.

It is an arithmetic number, because the mean of its divisors is an integer number (65515606612).

Almost surely, 2^131031213223 is an apocalyptic number.

131031213223 is a deficient number, since it is larger than the sum of its proper divisors (1).

131031213223 is an equidigital number, since it uses as much as digits as its factorization.

131031213223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 131031213223 its reverse (322312130131), we get a palindrome (453343343354).

The spelling of 131031213223 in words is "one hundred thirty-one billion, thirty-one million, two hundred thirteen thousand, two hundred twenty-three".