309310472 has 8 divisors (see below), whose sum is σ = 579957150. Its totient is φ = 154655232.

The previous prime is 309310471. The next prime is 309310483. The reversal of 309310472 is 274013903.

It can be written as a sum of positive squares in only one way, i.e., 298114756 + 11195716 = 17266^2 + 3346^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (309310471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19331897 + ... + 19331912.

Almost surely, 2^309310472 is an apocalyptic number.

It is an amenable number.

309310472 is a deficient number, since it is larger than the sum of its proper divisors (270646678).

309310472 is a wasteful number, since it uses less digits than its factorization.

309310472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38663815 (or 38663811 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 309310472 is about 17587.2246815693. The cubic root of 309310472 is about 676.2877817220.

The spelling of 309310472 in words is "three hundred nine million, three hundred ten thousand, four hundred seventy-two".