20211131103 has 4 divisors (see below), whose sum is σ = 26948174808. Its totient is φ = 13474087400.

The previous prime is 20211131081. The next prime is 20211131107. The reversal of 20211131103 is 30113111202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20211131103 - 2⁸ = 20211130847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211131107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3368521848 + ... + 3368521853.

It is an arithmetic number, because the mean of its divisors is an integer number (6737043702).

Almost surely, 2^20211131103 is an apocalyptic number.

20211131103 is a deficient number, since it is larger than the sum of its proper divisors (6737043705).

20211131103 is an equidigital number, since it uses as much as digits as its factorization.

20211131103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6737043704.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 20211131103 its reverse (30113111202), we get a palindrome (50324242305).

The spelling of 20211131103 in words is "twenty billion, two hundred eleven million, one hundred thirty-one thousand, one hundred three".