1331012343040 has 36 divisors (see below), whose sum is σ = 3188190506004. Its totient is φ = 532404936704.

The previous prime is 1331012343029. The next prime is 1331012343043. The reversal of 1331012343040 is 403432101331.

It can be written as a sum of positive squares in 2 ways, for example, as 204289536256 + 1126722806784 = 451984^2 + 1061472^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1331012342996 and 1331012343014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331012343043) 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, 519925417 + ... + 519927976.

It is an arithmetic number, because the mean of its divisors is an integer number (88560847389).

Almost surely, 2^{1331012343040} is an apocalyptic number.

1331012343040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331012343040 is an abundant number, since it is smaller than the sum of its proper divisors (1857178162964).

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

1331012343040 is an equidigital number, since it uses as much as digits as its factorization.

1331012343040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039853414 (or 1039853400 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1331012343040 its reverse (403432101331), we get a palindrome (1734444444371).

The spelling of 1331012343040 in words is "one trillion, three hundred thirty-one billion, twelve million, three hundred forty-three thousand, forty".