312089 has 2 divisors, whose sum is σ = 312090. Its totient is φ = 312088.

The previous prime is 312083. The next prime is 312101. The reversal of 312089 is 980213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211600 + 100489 = 460^2 + 317^2 .

It is a cyclic number.

It is not a de Polignac number, because 312089 - 2⁴ = 312073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156044 + 156045.

It is an arithmetic number, because the mean of its divisors is an integer number (156045).

2³¹²⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

312089 is a deficient number, since it is larger than the sum of its proper divisors (1).

312089 is an equidigital number, since it uses as much as digits as its factorization.

312089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 312089 is about 558.6492638499. The cubic root of 312089 is about 67.8306773458.

The spelling of 312089 in words is "three hundred twelve thousand, eighty-nine".