1331244312040 has 64 divisors (see below), whose sum is σ = 3125831420160. Its totient is φ = 509296550400.

The previous prime is 1331244312019. The next prime is 1331244312043. The reversal of 1331244312040 is 402134421331.

It is a happy number.

It is a super-2 number, since 2×1331244312040² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1331244312043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10319940 + ... + 10448140.

It is an arithmetic number, because the mean of its divisors is an integer number (48841115940).

Almost surely, 2^{1331244312040} is an apocalyptic number.

1331244312040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331244312040 is an abundant number, since it is smaller than the sum of its proper divisors (1794587108120).

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

1331244312040 is a wasteful number, since it uses less digits than its factorization.

1331244312040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139522 (or 139518 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1331244312040 its reverse (402134421331), we get a palindrome (1733378733371).

The spelling of 1331244312040 in words is "one trillion, three hundred thirty-one billion, two hundred forty-four million, three hundred twelve thousand, forty".