11303220331 has 4 divisors (see below), whose sum is σ = 12172698832. Its totient is φ = 10433741832.

The previous prime is 11303220319. The next prime is 11303220337. The reversal of 11303220331 is 13302230311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13302230311 = 223 ⋅59651257.

It is a cyclic number.

It is not a de Polignac number, because 11303220331 - 2⁹ = 11303219819 is a prime.

It is a super-2 number, since 2×11303220331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11303220299 and 11303220308.

It is not an unprimeable number, because it can be changed into a prime (11303220337) 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, 434739231 + ... + 434739256.

It is an arithmetic number, because the mean of its divisors is an integer number (3043174708).

Almost surely, 2^11303220331 is an apocalyptic number.

11303220331 is a deficient number, since it is larger than the sum of its proper divisors (869478501).

11303220331 is an equidigital number, since it uses as much as digits as its factorization.

11303220331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869478500.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 11303220331 its reverse (13302230311), we get a palindrome (24605450642).

The spelling of 11303220331 in words is "eleven billion, three hundred three million, two hundred twenty thousand, three hundred thirty-one".