20103421403 has 8 divisors (see below), whose sum is σ = 21687762096. Its totient is φ = 18524498400.

The previous prime is 20103421367. The next prime is 20103421483. The reversal of 20103421403 is 30412430102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20103421403 - 2¹² = 20103417307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20103421483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1346708 + ... + 1361553.

It is an arithmetic number, because the mean of its divisors is an integer number (2710970262).

Almost surely, 2^20103421403 is an apocalyptic number.

20103421403 is a deficient number, since it is larger than the sum of its proper divisors (1584340693).

20103421403 is a wasteful number, since it uses less digits than its factorization.

20103421403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2708845.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20103421403 its reverse (30412430102), we get a palindrome (50515851505).

The spelling of 20103421403 in words is "twenty billion, one hundred three million, four hundred twenty-one thousand, four hundred three".