1021331103 has 32 divisors (see below), whose sum is σ = 1506011136. Its totient is φ = 611739648.

The previous prime is 1021331093. The next prime is 1021331119. The reversal of 1021331103 is 3011331201.

It is not a de Polignac number, because 1021331103 - 2⁹ = 1021330591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021331203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 352326 + ... + 355212.

It is an arithmetic number, because the mean of its divisors is an integer number (47062848).

Almost surely, 2^1021331103 is an apocalyptic number.

1021331103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1021331103 is a deficient number, since it is larger than the sum of its proper divisors (484680033).

1021331103 is a wasteful number, since it uses less digits than its factorization.

1021331103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1021331103 is about 31958.2712767759. The cubic root of 1021331103 is about 1007.0604010846.

Adding to 1021331103 its reverse (3011331201), we get a palindrome (4032662304).

The spelling of 1021331103 in words is "one billion, twenty-one million, three hundred thirty-one thousand, one hundred three".