311358089 has 4 divisors (see below), whose sum is σ = 355837824. Its totient is φ = 266878356.

The previous prime is 311358037. The next prime is 311358097. The reversal of 311358089 is 980853113.

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 311358089 - 2²⁰ = 310309513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311352089) 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, 22239857 + ... + 22239870.

It is an arithmetic number, because the mean of its divisors is an integer number (88959456).

Almost surely, 2^311358089 is an apocalyptic number.

It is an amenable number.

311358089 is a deficient number, since it is larger than the sum of its proper divisors (44479735).

311358089 is an equidigital number, since it uses as much as digits as its factorization.

311358089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44479734.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 311358089 is about 17645.3418499048. The cubic root of 311358089 is about 677.7768290878.

The spelling of 311358089 in words is "three hundred eleven million, three hundred fifty-eight thousand, eighty-nine".