11001431057 has 2 divisors, whose sum is σ = 11001431058. Its totient is φ = 11001431056.

The previous prime is 11001431041. The next prime is 11001431099. The reversal of 11001431057 is 75013410011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10199182081 + 802248976 = 100991^2 + 28324^2 .

It is a cyclic number.

It is not a de Polignac number, because 11001431057 - 2⁴ = 11001431041 is a prime.

It is not a weakly prime, because it can be changed into another prime (11001431257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500715528 + 5500715529.

It is an arithmetic number, because the mean of its divisors is an integer number (5500715529).

Almost surely, 2^11001431057 is an apocalyptic number.

It is an amenable number.

11001431057 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001431057 is an equidigital number, since it uses as much as digits as its factorization.

11001431057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 23.

Adding to 11001431057 its reverse (75013410011), we get a palindrome (86014841068).

The spelling of 11001431057 in words is "eleven billion, one million, four hundred thirty-one thousand, fifty-seven".