20331103 has 16 divisors (see below), whose sum is σ = 23115456. Its totient is φ = 17740800.

The previous prime is 20331079. The next prime is 20331107. The reversal of 20331103 is 30113302.

It is a cyclic number.

It is not a de Polignac number, because 20331103 - 2⁹ = 20330591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331107) 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, 28653 + ... + 29353.

It is an arithmetic number, because the mean of its divisors is an integer number (1444716).

Almost surely, 2^20331103 is an apocalyptic number.

20331103 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20331103 is a deficient number, since it is larger than the sum of its proper divisors (2784353).

20331103 is a wasteful number, since it uses less digits than its factorization.

20331103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 20331103 is about 4509.0024395647. The cubic root of 20331103 is about 272.9314904547.

Adding to 20331103 its reverse (30113302), we get a palindrome (50444405).

It can be divided in two parts, 2033 and 1103, that added together give a square (3136 = 56²).

The spelling of 20331103 in words is "twenty million, three hundred thirty-one thousand, one hundred three".