1001311133 has 2 divisors, whose sum is σ = 1001311134. Its totient is φ = 1001311132.

The previous prime is 1001311123. The next prime is 1001311147. The reversal of 1001311133 is 3311131001.

It is a happy number.

It is an a-pointer prime, because the next prime (1001311147) can be obtained adding 1001311133 to its sum of digits (14).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1001279449 + 31684 = 31643^2 + 178^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001311133 - 2²⁴ = 984533917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001311123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500655566 + 500655567.

It is an arithmetic number, because the mean of its divisors is an integer number (500655567).

Almost surely, 2^1001311133 is an apocalyptic number.

It is an amenable number.

1001311133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001311133 is an equidigital number, since it uses as much as digits as its factorization.

1001311133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 1001311133 is about 31643.5006438921. The cubic root of 1001311133 is about 1000.4368534646.

Adding to 1001311133 its reverse (3311131001), we get a palindrome (4312442134).

The spelling of 1001311133 in words is "one billion, one million, three hundred eleven thousand, one hundred thirty-three".