1320444312340 has 12 divisors (see below), whose sum is σ = 2772933055956. Its totient is φ = 528177724928.

The previous prime is 1320444312277. The next prime is 1320444312373. The reversal of 1320444312340 is 432134440231.

It can be written as a sum of positive squares in 2 ways, for example, as 727861509904 + 592582802436 = 853148^2 + 769794^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33011107789 + ... + 33011107828.

It is an arithmetic number, because the mean of its divisors is an integer number (231077754663).

Almost surely, 2^{1320444312340} is an apocalyptic number.

1320444312340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320444312340 is an abundant number, since it is smaller than the sum of its proper divisors (1452488743616).

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

1320444312340 is a wasteful number, since it uses less digits than its factorization.

1320444312340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66022215626 (or 66022215624 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 1320444312340 its reverse (432134440231), we get a palindrome (1752578752571).

The spelling of 1320444312340 in words is "one trillion, three hundred twenty billion, four hundred forty-four million, three hundred twelve thousand, three hundred forty".