1313322131240 has 128 divisors (see below), whose sum is σ = 3487983206400. Its totient is φ = 435515408640.

The previous prime is 1313322131197. The next prime is 1313322131309. The reversal of 1313322131240 is 421312233131.

It is a happy 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, 15991001 + ... + 16072919.

It is an arithmetic number, because the mean of its divisors is an integer number (27249868800).

Almost surely, 2^{1313322131240} is an apocalyptic number.

1313322131240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1313322131240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1743991603200).

1313322131240 is an abundant number, since it is smaller than the sum of its proper divisors (2174661075160).

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

1313322131240 is a wasteful number, since it uses less digits than its factorization.

1313322131240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83815 (or 83811 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 1313322131240 its reverse (421312233131), we get a palindrome (1734634364371).

The spelling of 1313322131240 in words is "one trillion, three hundred thirteen billion, three hundred twenty-two million, one hundred thirty-one thousand, two hundred forty".