11020042331 has 8 divisors (see below), whose sum is σ = 11230371360. Its totient is φ = 10809802432.

The previous prime is 11020042289. The next prime is 11020042333. The reversal of 11020042331 is 13324002011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11020042331 is a prime.

It is a super-2 number, since 2×11020042331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11020042333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261455 + ... + 300663.

It is an arithmetic number, because the mean of its divisors is an integer number (1403796420).

Almost surely, 2^11020042331 is an apocalyptic number.

11020042331 is a deficient number, since it is larger than the sum of its proper divisors (210329029).

11020042331 is an equidigital number, since it uses as much as digits as its factorization.

11020042331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44565.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 11020042331 its reverse (13324002011), we get a palindrome (24344044342).

The spelling of 11020042331 in words is "eleven billion, twenty million, forty-two thousand, three hundred thirty-one".