1313344320420 has 384 divisors, whose sum is σ = 4389201395712. Its totient is φ = 289692057600.

The previous prime is 1313344320383. The next prime is 1313344320433. The reversal of 1313344320420 is 240234433131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 621553284 + ... + 621555396.

It is an arithmetic number, because the mean of its divisors is an integer number (11430211968).

Almost surely, 2^{1313344320420} is an apocalyptic number.

1313344320420 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 1313344320420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2194600697856).

1313344320420 is an abundant number, since it is smaller than the sum of its proper divisors (3075857075292).

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

1313344320420 is a wasteful number, since it uses less digits than its factorization.

1313344320420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3971 (or 3969 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 1313344320420 its reverse (240234433131), we get a palindrome (1553578753551).

The spelling of 1313344320420 in words is "one trillion, three hundred thirteen billion, three hundred forty-four million, three hundred twenty thousand, four hundred twenty".