11111303109 has 4 divisors (see below), whose sum is σ = 14815070816. Its totient is φ = 7407535404.

The previous prime is 11111303069. The next prime is 11111303131. The reversal of 11111303109 is 90130311111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11111303109 - 2¹⁶ = 11111237573 is a prime.

It is a super-2 number, since 2×11111303109² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11115303109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1851883849 + ... + 1851883854.

It is an arithmetic number, because the mean of its divisors is an integer number (3703767704).

Almost surely, 2^11111303109 is an apocalyptic number.

It is an amenable number.

11111303109 is a deficient number, since it is larger than the sum of its proper divisors (3703767707).

11111303109 is an equidigital number, since it uses as much as digits as its factorization.

11111303109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703767706.

The product of its (nonzero) digits is 81, while the sum is 21.

The spelling of 11111303109 in words is "eleven billion, one hundred eleven million, three hundred three thousand, one hundred nine".