30203256493 has 2 divisors, whose sum is σ = 30203256494. Its totient is φ = 30203256492.

The previous prime is 30203256481. The next prime is 30203256511. The reversal of 30203256493 is 39465230203.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29349857124 + 853399369 = 171318^2 + 29213^2 .

It is a cyclic number.

It is not a de Polignac number, because 30203256493 - 2³³ = 21613321901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30203257493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15101628246 + 15101628247.

It is an arithmetic number, because the mean of its divisors is an integer number (15101628247).

Almost surely, 2^30203256493 is an apocalyptic number.

It is an amenable number.

30203256493 is a deficient number, since it is larger than the sum of its proper divisors (1).

30203256493 is an equidigital number, since it uses as much as digits as its factorization.

30203256493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 37.

Adding to 30203256493 its reverse (39465230203), we get a palindrome (69668486696).

The spelling of 30203256493 in words is "thirty billion, two hundred three million, two hundred fifty-six thousand, four hundred ninety-three".