1311533507 has 2 divisors, whose sum is σ = 1311533508. Its totient is φ = 1311533506.

The previous prime is 1311533477. The next prime is 1311533519. The reversal of 1311533507 is 7053351131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1311533507 - 2¹² = 1311529411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1311533507.

It is not a weakly prime, because it can be changed into another prime (1311533407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655766753 + 655766754.

It is an arithmetic number, because the mean of its divisors is an integer number (655766754).

Almost surely, 2^1311533507 is an apocalyptic number.

1311533507 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311533507 is an equidigital number, since it uses as much as digits as its factorization.

1311533507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4725, while the sum is 29.

The square root of 1311533507 is about 36215.1005383114. The cubic root of 1311533507 is about 1094.6109713854.

Adding to 1311533507 its reverse (7053351131), we get a palindrome (8364884638).

The spelling of 1311533507 in words is "one billion, three hundred eleven million, five hundred thirty-three thousand, five hundred seven".