20403030111 has 16 divisors (see below), whose sum is σ = 27379102464. Its totient is φ = 13514561984.

The previous prime is 20403030101. The next prime is 20403030133. The reversal of 20403030111 is 11103030402.

It is a cyclic number.

It is not a de Polignac number, because 20403030111 - 2⁶ = 20403030047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20403030101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1311400 + ... + 1326866.

It is an arithmetic number, because the mean of its divisors is an integer number (1711193904).

Almost surely, 2^20403030111 is an apocalyptic number.

20403030111 is a deficient number, since it is larger than the sum of its proper divisors (6976072353).

20403030111 is a wasteful number, since it uses less digits than its factorization.

20403030111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18270.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20403030111 its reverse (11103030402), we get a palindrome (31506060513).

The spelling of 20403030111 in words is "twenty billion, four hundred three million, thirty thousand, one hundred eleven".