131222123 has 2 divisors, whose sum is σ = 131222124. Its totient is φ = 131222122.

The previous prime is 131222093. The next prime is 131222131. The reversal of 131222123 is 321222131.

It is a strong prime.

It is an emirp because it is prime and its reverse (321222131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131222123 - 2⁶ = 131222059 is a prime.

It is not a weakly prime, because it can be changed into another prime (131222173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65611061 + 65611062.

It is an arithmetic number, because the mean of its divisors is an integer number (65611062).

Almost surely, 2^131222123 is an apocalyptic number.

131222123 is a deficient number, since it is larger than the sum of its proper divisors (1).

131222123 is an equidigital number, since it uses as much as digits as its factorization.

131222123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 17.

The square root of 131222123 is about 11455.2225207545. Note that the first 3 decimals coincide. The cubic root of 131222123 is about 508.1621960741.

Adding to 131222123 its reverse (321222131), we get a palindrome (452444254).

The spelling of 131222123 in words is "one hundred thirty-one million, two hundred twenty-two thousand, one hundred twenty-three".