20111303134 has 64 divisors (see below), whose sum is σ = 34444795392. Its totient is φ = 8742297600.

The previous prime is 20111303117. The next prime is 20111303143. The reversal of 20111303134 is 43130311102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4766994 + ... + 4771210.

It is an arithmetic number, because the mean of its divisors is an integer number (538199928).

Almost surely, 2^20111303134 is an apocalyptic number.

20111303134 is a deficient number, since it is larger than the sum of its proper divisors (14333492258).

20111303134 is a wasteful number, since it uses less digits than its factorization.

20111303134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4421.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20111303134 its reverse (43130311102), we get a palindrome (63241614236).

The spelling of 20111303134 in words is "twenty billion, one hundred eleven million, three hundred three thousand, one hundred thirty-four".