11311235497 has 2 divisors, whose sum is σ = 11311235498. Its totient is φ = 11311235496.

The previous prime is 11311235471. The next prime is 11311235501. The reversal of 11311235497 is 79453211311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7645054096 + 3666181401 = 87436^2 + 60549^2 .

It is a cyclic number.

It is not a de Polignac number, because 11311235497 - 2¹¹ = 11311233449 is a prime.

It is not a weakly prime, because it can be changed into another prime (11311235597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655617748 + 5655617749.

It is an arithmetic number, because the mean of its divisors is an integer number (5655617749).

Almost surely, 2^11311235497 is an apocalyptic number.

It is an amenable number.

11311235497 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311235497 is an equidigital number, since it uses as much as digits as its factorization.

11311235497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The spelling of 11311235497 in words is "eleven billion, three hundred eleven million, two hundred thirty-five thousand, four hundred ninety-seven".