11313201989 has 2 divisors, whose sum is σ = 11313201990. Its totient is φ = 11313201988.

The previous prime is 11313201979. The next prime is 11313202013. The reversal of 11313201989 is 98910231311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9844013089 + 1469188900 = 99217^2 + 38330^2 .

It is a cyclic number.

It is not a de Polignac number, because 11313201989 - 2³² = 7018234693 is a prime.

It is a super-2 number, since 2×11313201989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11313201929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656600994 + 5656600995.

It is an arithmetic number, because the mean of its divisors is an integer number (5656600995).

Almost surely, 2^11313201989 is an apocalyptic number.

It is an amenable number.

11313201989 is a deficient number, since it is larger than the sum of its proper divisors (1).

11313201989 is an equidigital number, since it uses as much as digits as its factorization.

11313201989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 38.

The spelling of 11313201989 in words is "eleven billion, three hundred thirteen million, two hundred one thousand, nine hundred eighty-nine".