11331131332987 has 2 divisors, whose sum is σ = 11331131332988. Its totient is φ = 11331131332986.

The previous prime is 11331131332979. The next prime is 11331131333069. The reversal of 11331131332987 is 78923313113311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11331131332987 - 2³ = 11331131332979 is a prime.

It is not a weakly prime, because it can be changed into another prime (11331131332957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665565666493 + 5665565666494.

It is an arithmetic number, because the mean of its divisors is an integer number (5665565666494).

Almost surely, 2^{11331131332987} is an apocalyptic number.

11331131332987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331131332987 is an equidigital number, since it uses as much as digits as its factorization.

11331131332987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 46.

The spelling of 11331131332987 in words is "eleven trillion, three hundred thirty-one billion, one hundred thirty-one million, three hundred thirty-two thousand, nine hundred eighty-seven".