11331320993 has 2 divisors, whose sum is σ = 11331320994. Its totient is φ = 11331320992.

The previous prime is 11331320971. The next prime is 11331321019. The reversal of 11331320993 is 39902313311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8766202384 + 2565118609 = 93628^2 + 50647^2 .

It is a cyclic number.

It is not a de Polignac number, because 11331320993 - 2²⁶ = 11264212129 is a prime.

It is not a weakly prime, because it can be changed into another prime (11331320963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665660496 + 5665660497.

It is an arithmetic number, because the mean of its divisors is an integer number (5665660497).

Almost surely, 2^11331320993 is an apocalyptic number.

It is an amenable number.

11331320993 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331320993 is an equidigital number, since it uses as much as digits as its factorization.

11331320993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 35.

The spelling of 11331320993 in words is "eleven billion, three hundred thirty-one million, three hundred twenty thousand, nine hundred ninety-three".