1223310311331 has 8 divisors (see below), whose sum is σ = 1631100384960. Its totient is φ = 815530222632.

The previous prime is 1223310311329. The next prime is 1223310311341. The reversal of 1223310311331 is 1331130133221.

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

It is not a de Polignac number, because 1223310311331 - 2¹ = 1223310311329 is a prime.

It is a super-2 number, since 2×1223310311331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1223310311341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2205525 + ... + 2703878.

It is an arithmetic number, because the mean of its divisors is an integer number (203887548120).

Almost surely, 2^{1223310311331} is an apocalyptic number.

1223310311331 is a deficient number, since it is larger than the sum of its proper divisors (407790073629).

1223310311331 is an equidigital number, since it uses as much as digits as its factorization.

1223310311331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4992465.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1223310311331 its reverse (1331130133221), we get a palindrome (2554440444552).

The spelling of 1223310311331 in words is "one trillion, two hundred twenty-three billion, three hundred ten million, three hundred eleven thousand, three hundred thirty-one".