303640097 has 4 divisors (see below), whose sum is σ = 305678100. Its totient is φ = 301602096.

The previous prime is 303640081. The next prime is 303640123. The reversal of 303640097 is 790046303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56490256 + 247149841 = 7516^2 + 15721^2 .

It is a cyclic number.

It is not a de Polignac number, because 303640097 - 2⁴ = 303640081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (303640067) 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 3 ways as a sum of consecutive naturals, for example, 1018778 + ... + 1019075.

It is an arithmetic number, because the mean of its divisors is an integer number (76419525).

Almost surely, 2^303640097 is an apocalyptic number.

It is an amenable number.

303640097 is a deficient number, since it is larger than the sum of its proper divisors (2038003).

303640097 is a wasteful number, since it uses less digits than its factorization.

303640097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038002.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 303640097 is about 17425.2717912806. The cubic root of 303640097 is about 672.1296289813.

It can be divided in two parts, 303 and 640097, that multiplied together give a palindrome (193949391).

The spelling of 303640097 in words is "three hundred three million, six hundred forty thousand, ninety-seven".