11311601443 has 2 divisors, whose sum is σ = 11311601444. Its totient is φ = 11311601442.

The previous prime is 11311601387. The next prime is 11311601449. The reversal of 11311601443 is 34410611311.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11311601443 - 2²⁹ = 10774730531 is a prime.

It is not a weakly prime, because it can be changed into another prime (11311601449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655800721 + 5655800722.

It is an arithmetic number, because the mean of its divisors is an integer number (5655800722).

Almost surely, 2^11311601443 is an apocalyptic number.

11311601443 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311601443 is an equidigital number, since it uses as much as digits as its factorization.

11311601443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 11311601443 in words is "eleven billion, three hundred eleven million, six hundred one thousand, four hundred forty-three".