312046989 has 16 divisors (see below), whose sum is σ = 434445120. Its totient is φ = 198974720.

The previous prime is 312046967. The next prime is 312046993. The reversal of 312046989 is 989640213.

It is a cyclic number.

It is not a de Polignac number, because 312046989 - 2⁸ = 312046733 is a prime.

It is a super-2 number, since 2×312046989² = 194746646687932242, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 312046989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312046949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7452 + ... + 26069.

It is an arithmetic number, because the mean of its divisors is an integer number (27152820).

Almost surely, 2^312046989 is an apocalyptic number.

It is an amenable number.

312046989 is a deficient number, since it is larger than the sum of its proper divisors (122398131).

312046989 is a wasteful number, since it uses less digits than its factorization.

312046989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33660.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 312046989 is about 17664.8517967177. The cubic root of 312046989 is about 678.2763359608.

The spelling of 312046989 in words is "three hundred twelve million, forty-six thousand, nine hundred eighty-nine".