890311 has 4 divisors (see below), whose sum is σ = 892432. Its totient is φ = 888192.

The previous prime is 890303. The next prime is 890317. The reversal of 890311 is 113098.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 890311 - 2³ = 890303 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 (890317) 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, 195 + ... + 1348.

It is an arithmetic number, because the mean of its divisors is an integer number (223108).

2⁸⁹⁰³¹¹ is an apocalyptic number.

890311 is a deficient number, since it is larger than the sum of its proper divisors (2121).

890311 is a wasteful number, since it uses less digits than its factorization.

890311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 890311 is about 943.5629284791. The cubic root of 890311 is about 96.2012200115.

The spelling of 890311 in words is "eight hundred ninety thousand, three hundred eleven".