20103440323 has 2 divisors, whose sum is σ = 20103440324. Its totient is φ = 20103440322.

The previous prime is 20103440299. The next prime is 20103440327. The reversal of 20103440323 is 32304430102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20103440323 - 2²⁹ = 19566569411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20103440294 and 20103440303.

It is not a weakly prime, because it can be changed into another prime (20103440327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051720161 + 10051720162.

It is an arithmetic number, because the mean of its divisors is an integer number (10051720162).

Almost surely, 2^20103440323 is an apocalyptic number.

20103440323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20103440323 is an equidigital number, since it uses as much as digits as its factorization.

20103440323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20103440323 its reverse (32304430102), we get a palindrome (52407870425).

The spelling of 20103440323 in words is "twenty billion, one hundred three million, four hundred forty thousand, three hundred twenty-three".