1331244323320 has 16 divisors (see below), whose sum is σ = 2995299727560. Its totient is φ = 532497729312.

The previous prime is 1331244323303. The next prime is 1331244323323. The reversal of 1331244323320 is 233234421331.

It is a happy number.

It is a super-2 number, since 2×1331244323320² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331244323323) 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, 16640554002 + ... + 16640554081.

Almost surely, 2^{1331244323320} is an apocalyptic number.

1331244323320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331244323320 is an abundant number, since it is smaller than the sum of its proper divisors (1664055404240).

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

1331244323320 is a wasteful number, since it uses less digits than its factorization.

1331244323320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33281108094 (or 33281108090 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 1331244323320 its reverse (233234421331), we get a palindrome (1564478744651).

The spelling of 1331244323320 in words is "one trillion, three hundred thirty-one billion, two hundred forty-four million, three hundred twenty-three thousand, three hundred twenty".