311300089 has 2 divisors, whose sum is σ = 311300090. Its totient is φ = 311300088.

The previous prime is 311300083. The next prime is 311300131. The reversal of 311300089 is 980003113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196981225 + 114318864 = 14035^2 + 10692^2 .

It is a cyclic number.

It is not a de Polignac number, because 311300089 - 2⁹ = 311299577 is a prime.

It is a super-4 number, since 4×311300089⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (311300083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155650044 + 155650045.

It is an arithmetic number, because the mean of its divisors is an integer number (155650045).

Almost surely, 2^311300089 is an apocalyptic number.

It is an amenable number.

311300089 is a deficient number, since it is larger than the sum of its proper divisors (1).

311300089 is an equidigital number, since it uses as much as digits as its factorization.

311300089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 311300089 is about 17643.6982801226. The cubic root of 311300089 is about 677.7347408956.

The spelling of 311300089 in words is "three hundred eleven million, three hundred thousand, eighty-nine".