11531033539 has 2 divisors, whose sum is σ = 11531033540. Its totient is φ = 11531033538.

The previous prime is 11531033497. The next prime is 11531033543. The reversal of 11531033539 is 93533013511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11531033539 - 2¹³ = 11531025347 is a prime.

It is not a weakly prime, because it can be changed into another prime (11531033939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5765516769 + 5765516770.

It is an arithmetic number, because the mean of its divisors is an integer number (5765516770).

Almost surely, 2^11531033539 is an apocalyptic number.

11531033539 is a deficient number, since it is larger than the sum of its proper divisors (1).

11531033539 is an equidigital number, since it uses as much as digits as its factorization.

11531033539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18225, while the sum is 34.

The spelling of 11531033539 in words is "eleven billion, five hundred thirty-one million, thirty-three thousand, five hundred thirty-nine".