1313231233 has 2 divisors, whose sum is σ = 1313231234. Its totient is φ = 1313231232.

The previous prime is 1313231177. The next prime is 1313231261. The reversal of 1313231233 is 3321323131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 832437904 + 480793329 = 28852^2 + 21927^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313231233 - 2¹⁷ = 1313100161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313231033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656615616 + 656615617.

It is an arithmetic number, because the mean of its divisors is an integer number (656615617).

Almost surely, 2^1313231233 is an apocalyptic number.

It is an amenable number.

1313231233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313231233 is an equidigital number, since it uses as much as digits as its factorization.

1313231233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 22.

The square root of 1313231233 is about 36238.5324344130. The cubic root of 1313231233 is about 1095.0830773133.

Adding to 1313231233 its reverse (3321323131), we get a palindrome (4634554364).

The spelling of 1313231233 in words is "one billion, three hundred thirteen million, two hundred thirty-one thousand, two hundred thirty-three".