11032311310981 has 2 divisors, whose sum is σ = 11032311310982. Its totient is φ = 11032311310980.

The previous prime is 11032311310963. The next prime is 11032311311033. The reversal of 11032311310981 is 18901311323011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8651045682756 + 2381265628225 = 2941266^2 + 1543135^2 .

It is a cyclic number.

It is not a de Polignac number, because 11032311310981 - 2³³ = 11023721376389 is a prime.

It is a super-2 number, since 2×11032311310981² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11032311310901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5516155655490 + 5516155655491.

It is an arithmetic number, because the mean of its divisors is an integer number (5516155655491).

Almost surely, 2^{11032311310981} is an apocalyptic number.

It is an amenable number.

11032311310981 is a deficient number, since it is larger than the sum of its proper divisors (1).

11032311310981 is an equidigital number, since it uses as much as digits as its factorization.

11032311310981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 34.

Adding to 11032311310981 its reverse (18901311323011), we get a palindrome (29933622633992).

The spelling of 11032311310981 in words is "eleven trillion, thirty-two billion, three hundred eleven million, three hundred ten thousand, nine hundred eighty-one".