1223330331 has 4 divisors (see below), whose sum is σ = 1631107112. Its totient is φ = 815553552.

The previous prime is 1223330309. The next prime is 1223330347. The reversal of 1223330331 is 1330333221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1223330331 - 2¹¹ = 1223328283 is a prime.

It is a super-2 number, since 2×1223330331² = 2993074197489139122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223330298 and 1223330307.

It is not an unprimeable number, because it can be changed into a prime (1223330351) 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, 203888386 + ... + 203888391.

It is an arithmetic number, because the mean of its divisors is an integer number (407776778).

Almost surely, 2^1223330331 is an apocalyptic number.

1223330331 is a deficient number, since it is larger than the sum of its proper divisors (407776781).

1223330331 is an equidigital number, since it uses as much as digits as its factorization.

1223330331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407776780.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 1223330331 is about 34976.1394524896. The cubic root of 1223330331 is about 1069.5011303020.

Adding to 1223330331 its reverse (1330333221), we get a palindrome (2553663552).

The spelling of 1223330331 in words is "one billion, two hundred twenty-three million, three hundred thirty thousand, three hundred thirty-one".