1310321200220 has 48 divisors (see below), whose sum is σ = 2928791996928. Its totient is φ = 490714659840.

The previous prime is 1310321200219. The next prime is 1310321200229. The reversal of 1310321200220 is 220021230131.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310321200229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10023767 + ... + 10153646.

It is an arithmetic number, because the mean of its divisors is an integer number (61016499936).

Almost surely, 2^{1310321200220} is an apocalyptic number.

1310321200220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1310321200220 is an abundant number, since it is smaller than the sum of its proper divisors (1618470796708).

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

1310321200220 is a wasteful number, since it uses less digits than its factorization.

1310321200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20177630 (or 20177628 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1310321200220 its reverse (220021230131), we get a palindrome (1530342430351).

The spelling of 1310321200220 in words is "one trillion, three hundred ten billion, three hundred twenty-one million, two hundred thousand, two hundred twenty".