306031093 has 12 divisors (see below), whose sum is σ = 332159940. Its totient is φ = 280977920.

The previous prime is 306031091. The next prime is 306031097. The reversal of 306031093 is 390130603.

It can be written as a sum of positive squares in 6 ways, for example, as 4418404 + 301612689 = 2102^2 + 17367^2 .

It is not a de Polignac number, because 306031093 - 2¹ = 306031091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306031091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23223 + ... + 33931.

It is an arithmetic number, because the mean of its divisors is an integer number (27679995).

Almost surely, 2^306031093 is an apocalyptic number.

It is an amenable number.

306031093 is a deficient number, since it is larger than the sum of its proper divisors (26128847).

306031093 is a wasteful number, since it uses less digits than its factorization.

306031093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10808 (or 10767 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 25.

The square root of 306031093 is about 17493.7443962120. The cubic root of 306031093 is about 673.8892334124.

Adding to 306031093 its reverse (390130603), we get a palindrome (696161696).

The spelling of 306031093 in words is "three hundred six million, thirty-one thousand, ninety-three".