312920073 has 12 divisors (see below), whose sum is σ = 462507760. Its totient is φ = 203761656.

The previous prime is 312920039. The next prime is 312920081. The reversal of 312920073 is 370029213.

It is not a de Polignac number, because 312920073 - 2⁶ = 312920009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312920273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 403903 + ... + 404676.

Almost surely, 2^312920073 is an apocalyptic number.

It is an amenable number.

312920073 is a deficient number, since it is larger than the sum of its proper divisors (149587687).

312920073 is a wasteful number, since it uses less digits than its factorization.

312920073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808628 (or 808625 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 312920073 is about 17689.5469981568. The cubic root of 312920073 is about 678.9083356181.

Adding to 312920073 its reverse (370029213), we get a palindrome (682949286).

The spelling of 312920073 in words is "three hundred twelve million, nine hundred twenty thousand, seventy-three".