1311332123 has 2 divisors, whose sum is σ = 1311332124. Its totient is φ = 1311332122.

The previous prime is 1311332093. The next prime is 1311332129. The reversal of 1311332123 is 3212331131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1311332123 - 2¹² = 1311328027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311332095 and 1311332104.

It is not a weakly prime, because it can be changed into another prime (1311332129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655666061 + 655666062.

It is an arithmetic number, because the mean of its divisors is an integer number (655666062).

Almost surely, 2^1311332123 is an apocalyptic number.

1311332123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311332123 is an equidigital number, since it uses as much as digits as its factorization.

1311332123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 20.

The square root of 1311332123 is about 36212.3200444269. The cubic root of 1311332123 is about 1094.5549432275.

Adding to 1311332123 its reverse (3212331131), we get a palindrome (4523663254).

The spelling of 1311332123 in words is "one billion, three hundred eleven million, three hundred thirty-two thousand, one hundred twenty-three".