312089977 has 2 divisors, whose sum is σ = 312089978. Its totient is φ = 312089976.

The previous prime is 312089963. The next prime is 312090041. The reversal of 312089977 is 779980213.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 286929721 + 25160256 = 16939^2 + 5016^2 .

It is a cyclic number.

It is not a de Polignac number, because 312089977 - 2¹⁵ = 312057209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312089177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156044988 + 156044989.

It is an arithmetic number, because the mean of its divisors is an integer number (156044989).

Almost surely, 2^312089977 is an apocalyptic number.

It is an amenable number.

312089977 is a deficient number, since it is larger than the sum of its proper divisors (1).

312089977 is an equidigital number, since it uses as much as digits as its factorization.

312089977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 312089977 is about 17666.0685213208. The cubic root of 312089977 is about 678.3074812748.

The spelling of 312089977 in words is "three hundred twelve million, eighty-nine thousand, nine hundred seventy-seven".