305314431493 has 2 divisors, whose sum is σ = 305314431494. Its totient is φ = 305314431492.

The previous prime is 305314431413. The next prime is 305314431509. The reversal of 305314431493 is 394134413503.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238957701889 + 66356729604 = 488833^2 + 257598^2 .

It is a cyclic number.

It is not a de Polignac number, because 305314431493 - 2¹³ = 305314423301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305314431413) 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, 152657215746 + 152657215747.

It is an arithmetic number, because the mean of its divisors is an integer number (152657215747).

Almost surely, 2^305314431493 is an apocalyptic number.

It is an amenable number.

305314431493 is a deficient number, since it is larger than the sum of its proper divisors (1).

305314431493 is an equidigital number, since it uses as much as digits as its factorization.

305314431493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 40.

Adding to 305314431493 its reverse (394134413503), we get a palindrome (699448844996).

The spelling of 305314431493 in words is "three hundred five billion, three hundred fourteen million, four hundred thirty-one thousand, four hundred ninety-three".