920311 has 8 divisors (see below), whose sum is σ = 1066784. Its totient is φ = 777600.

The previous prime is 920291. The next prime is 920323. The reversal of 920311 is 113029.

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

It is a 7-Lehmer number, since φ(920311) divides (920311-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 920311 - 2⁵ = 920279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920371) 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, 390 + ... + 1411.

It is an arithmetic number, because the mean of its divisors is an integer number (133348).

2⁹²⁰³¹¹ is an apocalyptic number.

920311 is a deficient number, since it is larger than the sum of its proper divisors (146473).

920311 is a wasteful number, since it uses less digits than its factorization.

920311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 920311 is about 959.3284109209. The cubic root of 920311 is about 97.2698406309.

The spelling of 920311 in words is "nine hundred twenty thousand, three hundred eleven".