11303122991 has 2 divisors, whose sum is σ = 11303122992. Its totient is φ = 11303122990.

The previous prime is 11303122949. The next prime is 11303123033. The reversal of 11303122991 is 19922130311.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (11303122949) and next prime (11303123033).

It is a cyclic number.

It is not a de Polignac number, because 11303122991 - 2¹⁰ = 11303121967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11303122891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5651561495 + 5651561496.

It is an arithmetic number, because the mean of its divisors is an integer number (5651561496).

Almost surely, 2^11303122991 is an apocalyptic number.

11303122991 is a deficient number, since it is larger than the sum of its proper divisors (1).

11303122991 is an equidigital number, since it uses as much as digits as its factorization.

11303122991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 11303122991 in words is "eleven billion, three hundred three million, one hundred twenty-two thousand, nine hundred ninety-one".