1321356160 has 32 divisors (see below), whose sum is σ = 3158868600. Its totient is φ = 528542208.

The previous prime is 1321356131. The next prime is 1321356191. The reversal of 1321356160 is 616531231.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

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, 1031670 + ... + 1032949.

Almost surely, 2^1321356160 is an apocalyptic number.

1321356160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321356160 is an abundant number, since it is smaller than the sum of its proper divisors (1837512440).

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

1321356160 is an equidigital number, since it uses as much as digits as its factorization.

1321356160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064638 (or 2064626 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1321356160 is about 36350.4629956759. The cubic root of 1321356160 is about 1097.3368523734.

Adding to 1321356160 its reverse (616531231), we get a palindrome (1937887391).

The spelling of 1321356160 in words is "one billion, three hundred twenty-one million, three hundred fifty-six thousand, one hundred sixty".