1311006553 has 2 divisors, whose sum is σ = 1311006554. Its totient is φ = 1311006552.

The previous prime is 1311006539. The next prime is 1311006559. The reversal of 1311006553 is 3556001131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1187974089 + 123032464 = 34467^2 + 11092^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311006553 - 2¹³ = 1310998361 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311006559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655503276 + 655503277.

It is an arithmetic number, because the mean of its divisors is an integer number (655503277).

Almost surely, 2^1311006553 is an apocalyptic number.

It is an amenable number.

1311006553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311006553 is an equidigital number, since it uses as much as digits as its factorization.

1311006553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 1311006553 is about 36207.8244720668. The cubic root of 1311006553 is about 1094.4643524606.

Adding to 1311006553 its reverse (3556001131), we get a palindrome (4867007684).

The spelling of 1311006553 in words is "one billion, three hundred eleven million, six thousand, five hundred fifty-three".