11303219991 has 12 divisors (see below), whose sum is σ = 17531525112. Its totient is φ = 6458982768.

The previous prime is 11303219933. The next prime is 11303220041. The reversal of 11303219991 is 19991230311.

It is not a de Polignac number, because 11303219991 - 2¹⁰ = 11303218967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11303219891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38446180 + ... + 38446473.

It is an arithmetic number, because the mean of its divisors is an integer number (1460960426).

Almost surely, 2^11303219991 is an apocalyptic number.

11303219991 is a deficient number, since it is larger than the sum of its proper divisors (6228305121).

11303219991 is an equidigital number, since it uses as much as digits as its factorization.

11303219991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76892670 (or 76892663 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 39.

The spelling of 11303219991 in words is "eleven billion, three hundred three million, two hundred nineteen thousand, nine hundred ninety-one".