20115343403 has 2 divisors, whose sum is σ = 20115343404. Its totient is φ = 20115343402.

The previous prime is 20115343397. The next prime is 20115343421. The reversal of 20115343403 is 30434351102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20115343403 - 2³⁴ = 2935474219 is a prime.

It is not a weakly prime, because it can be changed into another prime (20115349403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10057671701 + 10057671702.

It is an arithmetic number, because the mean of its divisors is an integer number (10057671702).

Almost surely, 2^20115343403 is an apocalyptic number.

20115343403 is a deficient number, since it is larger than the sum of its proper divisors (1).

20115343403 is an equidigital number, since it uses as much as digits as its factorization.

20115343403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 20115343403 its reverse (30434351102), we get a palindrome (50549694505).

The spelling of 20115343403 in words is "twenty billion, one hundred fifteen million, three hundred forty-three thousand, four hundred three".