921136317 has 8 divisors (see below), whose sum is σ = 1232714880. Its totient is φ = 611824320.

The previous prime is 921136253. The next prime is 921136319. The reversal of 921136317 is 713631129.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 921136317 - 2⁶ = 921136253 is a prime.

It is a super-4 number, since 4×921136317⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921136319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565692 + ... + 567317.

It is an arithmetic number, because the mean of its divisors is an integer number (154089360).

Almost surely, 2^921136317 is an apocalyptic number.

It is an amenable number.

921136317 is a deficient number, since it is larger than the sum of its proper divisors (311578563).

921136317 is a wasteful number, since it uses less digits than its factorization.

921136317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133283.

The product of its digits is 6804, while the sum is 33.

The square root of 921136317 is about 30350.2276268235. The cubic root of 921136317 is about 972.9890851033.

The spelling of 921136317 in words is "nine hundred twenty-one million, one hundred thirty-six thousand, three hundred seventeen".