1111344397 has 2 divisors, whose sum is σ = 1111344398. Its totient is φ = 1111344396.

The previous prime is 1111344391. The next prime is 1111344427. The reversal of 1111344397 is 7934431111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 716686441 + 394657956 = 26771^2 + 19866^2 .

It is an emirp because it is prime and its reverse (7934431111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111344397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111344391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555672198 + 555672199.

It is an arithmetic number, because the mean of its divisors is an integer number (555672199).

Almost surely, 2^1111344397 is an apocalyptic number.

It is an amenable number.

1111344397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111344397 is an equidigital number, since it uses as much as digits as its factorization.

1111344397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 34.

The square root of 1111344397 is about 33336.8324380107. The cubic root of 1111344397 is about 1035.8166509285.

The spelling of 1111344397 in words is "one billion, one hundred eleven million, three hundred forty-four thousand, three hundred ninety-seven".