1321119360 has 384 divisors, whose sum is σ = 5155488000. Its totient is φ = 308797440.

The previous prime is 1321119347. The next prime is 1321119367. The reversal of 1321119360 is 639111231.

It is a tau number, because it is divible by the number of its divisors (384).

It is not an unprimeable number, because it can be changed into a prime (1321119367) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1837081 + ... + 1837799.

It is an arithmetic number, because the mean of its divisors is an integer number (13425750).

Almost surely, 2^1321119360 is an apocalyptic number.

1321119360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321119360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2577744000).

1321119360 is an abundant number, since it is smaller than the sum of its proper divisors (3834368640).

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

1321119360 is a wasteful number, since it uses less digits than its factorization.

1321119360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 769 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 1321119360 is about 36347.2056697623. The cubic root of 1321119360 is about 1097.2712972772.

The spelling of 1321119360 in words is "one billion, three hundred twenty-one million, one hundred nineteen thousand, three hundred sixty".