11231310289 has 2 divisors, whose sum is σ = 11231310290. Its totient is φ = 11231310288.

The previous prime is 11231310271. The next prime is 11231310331. The reversal of 11231310289 is 98201313211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10605910225 + 625400064 = 102985^2 + 25008^2 .

It is a cyclic number.

It is not a de Polignac number, because 11231310289 - 2⁵ = 11231310257 is a prime.

It is a super-2 number, since 2×11231310289² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11231310289.

It is not a weakly prime, because it can be changed into another prime (11231310239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5615655144 + 5615655145.

It is an arithmetic number, because the mean of its divisors is an integer number (5615655145).

Almost surely, 2^11231310289 is an apocalyptic number.

It is an amenable number.

11231310289 is a deficient number, since it is larger than the sum of its proper divisors (1).

11231310289 is an equidigital number, since it uses as much as digits as its factorization.

11231310289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 11231310289 in words is "eleven billion, two hundred thirty-one million, three hundred ten thousand, two hundred eighty-nine".