1021131103 has 4 divisors (see below), whose sum is σ = 1054070848. Its totient is φ = 988191360.

The previous prime is 1021131101. The next prime is 1021131107. The reversal of 1021131103 is 3011311201.

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 1021131103 - 2¹ = 1021131101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021131101) 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, 16469826 + ... + 16469887.

It is an arithmetic number, because the mean of its divisors is an integer number (263517712).

Almost surely, 2^1021131103 is an apocalyptic number.

1021131103 is a deficient number, since it is larger than the sum of its proper divisors (32939745).

1021131103 is an equidigital number, since it uses as much as digits as its factorization.

1021131103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32939744.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1021131103 is about 31955.1420431830. The cubic root of 1021131103 is about 1006.9946616366.

Adding to 1021131103 its reverse (3011311201), we get a palindrome (4032442304).

It can be divided in two parts, 10211 and 31103, that added together give a palindrome (41314).

The spelling of 1021131103 in words is "one billion, twenty-one million, one hundred thirty-one thousand, one hundred three".