20310465403 has 12 divisors (see below), whose sum is σ = 21879379152. Its totient is φ = 18846477440.

The previous prime is 20310465379. The next prime is 20310465431. The reversal of 20310465403 is 30456401302.

It is not a de Polignac number, because 20310465403 - 2⁹ = 20310464891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20310465103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 474400 + ... + 515437.

It is an arithmetic number, because the mean of its divisors is an integer number (1823281596).

Almost surely, 2^20310465403 is an apocalyptic number.

20310465403 is a deficient number, since it is larger than the sum of its proper divisors (1568913749).

20310465403 is an equidigital number, since it uses as much as digits as its factorization.

20310465403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989942 (or 989925 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 20310465403 its reverse (30456401302), we get a palindrome (50766866705).

The spelling of 20310465403 in words is "twenty billion, three hundred ten million, four hundred sixty-five thousand, four hundred three".