1313442220 has 12 divisors (see below), whose sum is σ = 2758228704. Its totient is φ = 525376880.

The previous prime is 1313442211. The next prime is 1313442239. The reversal of 1313442220 is 222443131.

It is a junction number, because it is equal to n+sod(n) for n = 1313442191 and 1313442200.

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, 32836036 + ... + 32836075.

It is an arithmetic number, because the mean of its divisors is an integer number (229852392).

Almost surely, 2^1313442220 is an apocalyptic number.

1313442220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1313442220 is an abundant number, since it is smaller than the sum of its proper divisors (1444786484).

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

1313442220 is a wasteful number, since it uses less digits than its factorization.

1313442220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65672120 (or 65672118 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1313442220 is about 36241.4434039264. The cubic root of 1313442220 is about 1095.1417204309.

Adding to 1313442220 its reverse (222443131), we get a palindrome (1535885351).

The spelling of 1313442220 in words is "one billion, three hundred thirteen million, four hundred forty-two thousand, two hundred twenty".