11231312969 has 2 divisors, whose sum is σ = 11231312970. Its totient is φ = 11231312968.

The previous prime is 11231312951. The next prime is 11231312971. The reversal of 11231312969 is 96921313211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11124975625 + 106337344 = 105475^2 + 10312^2 .

It is a cyclic number.

It is not a de Polignac number, because 11231312969 - 2¹² = 11231308873 is a prime.

It is a super-2 number, since 2×11231312969² (a number of 21 digits) contains 22 as substring.

Together with 11231312971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11231317969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5615656484 + 5615656485.

It is an arithmetic number, because the mean of its divisors is an integer number (5615656485).

Almost surely, 2^11231312969 is an apocalyptic number.

It is an amenable number.

11231312969 is a deficient number, since it is larger than the sum of its proper divisors (1).

11231312969 is an equidigital number, since it uses as much as digits as its factorization.

11231312969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 38.

The spelling of 11231312969 in words is "eleven billion, two hundred thirty-one million, three hundred twelve thousand, nine hundred sixty-nine".