1321348620 has 48 divisors (see below), whose sum is σ = 3860640000. Its totient is φ = 337039296.

The previous prime is 1321348583. The next prime is 1321348627. The reversal of 1321348620 is 268431231.

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

It is not an unprimeable number, because it can be changed into a prime (1321348627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477370 + ... + 480129.

It is an arithmetic number, because the mean of its divisors is an integer number (80430000).

Almost surely, 2^1321348620 is an apocalyptic number.

1321348620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321348620 is an abundant number, since it is smaller than the sum of its proper divisors (2539291380).

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

1321348620 is a wasteful number, since it uses less digits than its factorization.

1321348620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957534 (or 957532 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 1321348620 is about 36350.3592829562. The cubic root of 1321348620 is about 1097.3347651402.

Adding to 1321348620 its reverse (268431231), we get a palindrome (1589779851).

The spelling of 1321348620 in words is "one billion, three hundred twenty-one million, three hundred forty-eight thousand, six hundred twenty".