1223311331000 has 96 divisors (see below), whose sum is σ = 3146437934640. Its totient is φ = 444840440000.

The previous prime is 1223311330987. The next prime is 1223311331041. The reversal of 1223311331000 is 1331133221.

It is a super-2 number, since 2×1223311331000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4934006 + ... + 5176005.

Almost surely, 2^{1223311331000} is an apocalyptic number.

1223311331000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223311331000 is an abundant number, since it is smaller than the sum of its proper divisors (1923126603640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223311331000 is a wasteful number, since it uses less digits than its factorization.

1223311331000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110054 (or 10110029 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1223311331000 its reverse (1331133221), we get a palindrome (1224642464221).

The spelling of 1223311331000 in words is "one trillion, two hundred twenty-three billion, three hundred eleven million, three hundred thirty-one thousand".