1117916321 has 4 divisors (see below), whose sum is σ = 1119249600. Its totient is φ = 1116583044.

The previous prime is 1117916309. The next prime is 1117916347. The reversal of 1117916321 is 1236197111.

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 1117916321 - 2²² = 1113722017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1117916351) 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, 665381 + ... + 667058.

It is an arithmetic number, because the mean of its divisors is an integer number (279812400).

Almost surely, 2^1117916321 is an apocalyptic number.

It is an amenable number.

1117916321 is a deficient number, since it is larger than the sum of its proper divisors (1333279).

1117916321 is an equidigital number, since it uses as much as digits as its factorization.

1117916321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333278.

The product of its digits is 2268, while the sum is 32.

The square root of 1117916321 is about 33435.2556592588. The cubic root of 1117916321 is about 1037.8544032578.

The spelling of 1117916321 in words is "one billion, one hundred seventeen million, nine hundred sixteen thousand, three hundred twenty-one".