312889039 has 2 divisors, whose sum is σ = 312889040. Its totient is φ = 312889038.

The previous prime is 312889037. The next prime is 312889043. The reversal of 312889039 is 930988213.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312889039 - 2¹ = 312889037 is a prime.

Together with 312889037, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 312888986 and 312889004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312889037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156444519 + 156444520.

It is an arithmetic number, because the mean of its divisors is an integer number (156444520).

Almost surely, 2^312889039 is an apocalyptic number.

312889039 is a deficient number, since it is larger than the sum of its proper divisors (1).

312889039 is an equidigital number, since it uses as much as digits as its factorization.

312889039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 312889039 is about 17688.6697917056. The cubic root of 312889039 is about 678.8858911883.

The spelling of 312889039 in words is "three hundred twelve million, eight hundred eighty-nine thousand, thirty-nine".