1315332220 has 12 divisors (see below), whose sum is σ = 2762197704. Its totient is φ = 526132880.

The previous prime is 1315332199. The next prime is 1315332223. The reversal of 1315332220 is 222335131.

It is a junction number, because it is equal to n+sod(n) for n = 1315332191 and 1315332200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315332223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32883286 + ... + 32883325.

It is an arithmetic number, because the mean of its divisors is an integer number (230183142).

Almost surely, 2^1315332220 is an apocalyptic number.

1315332220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1315332220 is an abundant number, since it is smaller than the sum of its proper divisors (1446865484).

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

1315332220 is a wasteful number, since it uses less digits than its factorization.

1315332220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65766620 (or 65766618 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1315332220 is about 36267.5091507537. The cubic root of 1315332220 is about 1095.6667596023. Note that the first 3 decimals are identical.

Adding to 1315332220 its reverse (222335131), we get a palindrome (1537667351).

The spelling of 1315332220 in words is "one billion, three hundred fifteen million, three hundred thirty-two thousand, two hundred twenty".