1331123331000 has 128 divisors (see below), whose sum is σ = 4241469173760. Its totient is φ = 347413712000.

The previous prime is 1331123330989. The next prime is 1331123331023. The reversal of 1331123331000 is 1333211331.

It is a super-2 number, since 2×1331123331000² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4579296 + ... + 4861295.

It is an arithmetic number, because the mean of its divisors is an integer number (33136477920).

Almost surely, 2^{1331123331000} is an apocalyptic number.

1331123331000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331123331000 is an abundant number, since it is smaller than the sum of its proper divisors (2910345842760).

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

1331123331000 is a wasteful number, since it uses less digits than its factorization.

1331123331000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9440662 (or 9440648 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 1331123331000 its reverse (1333211331), we get a palindrome (1332456542331).

The spelling of 1331123331000 in words is "one trillion, three hundred thirty-one billion, one hundred twenty-three million, three hundred thirty-one thousand".