1080321217 has 4 divisors (see below), whose sum is σ = 1081301760. Its totient is φ = 1079340676.

The previous prime is 1080321119. The next prime is 1080321269. The reversal of 1080321217 is 7121230801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1080321217 - 2¹¹ = 1080319169 is a prime.

It is a super-2 number, since 2×1080321217² = 2334187863800722178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1080321191 and 1080321200.

It is not an unprimeable number, because it can be changed into a prime (1080321317) 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, 488617 + ... + 490822.

It is an arithmetic number, because the mean of its divisors is an integer number (270325440).

Almost surely, 2^1080321217 is an apocalyptic number.

It is an amenable number.

1080321217 is a deficient number, since it is larger than the sum of its proper divisors (980543).

1080321217 is an equidigital number, since it uses as much as digits as its factorization.

1080321217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980542.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1080321217 is about 32868.2402479962. The cubic root of 1080321217 is about 1026.0872752092.

The spelling of 1080321217 in words is "one billion, eighty million, three hundred twenty-one thousand, two hundred seventeen".