313530073 has 2 divisors, whose sum is σ = 313530074. Its totient is φ = 313530072.

The previous prime is 313530017. The next prime is 313530143. The reversal of 313530073 is 370035313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283147929 + 30382144 = 16827^2 + 5512^2 .

It is a cyclic number.

It is not a de Polignac number, because 313530073 - 2⁹ = 313529561 is a prime.

It is a super-2 number, since 2×313530073² = 196602213350770658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (313530013) 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, 156765036 + 156765037.

It is an arithmetic number, because the mean of its divisors is an integer number (156765037).

Almost surely, 2^313530073 is an apocalyptic number.

It is an amenable number.

313530073 is a deficient number, since it is larger than the sum of its proper divisors (1).

313530073 is an equidigital number, since it uses as much as digits as its factorization.

313530073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2835, while the sum is 25.

The square root of 313530073 is about 17706.7804244589. The cubic root of 313530073 is about 679.3491992869.

Adding to 313530073 its reverse (370035313), we get a palindrome (683565386).

The spelling of 313530073 in words is "three hundred thirteen million, five hundred thirty thousand, seventy-three".