1131911437133 has 2 divisors, whose sum is σ = 1131911437134. Its totient is φ = 1131911437132.

The previous prime is 1131911437109. The next prime is 1131911437147. The reversal of 1131911437133 is 3317341191311.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1118714482249 + 13196954884 = 1057693^2 + 114878^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131911437133 - 2¹⁶ = 1131911371597 is a prime.

It is a super-2 number, since 2×1131911437133² (a number of 25 digits) contains 22 as substring.

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 (1131911437633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565955718566 + 565955718567.

It is an arithmetic number, because the mean of its divisors is an integer number (565955718567).

Almost surely, 2^{1131911437133} is an apocalyptic number.

It is an amenable number.

1131911437133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131911437133 is an equidigital number, since it uses as much as digits as its factorization.

1131911437133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 38.

The spelling of 1131911437133 in words is "one trillion, one hundred thirty-one billion, nine hundred eleven million, four hundred thirty-seven thousand, one hundred thirty-three".