1031021 has 6 divisors (see below), whose sum is σ = 1078350. Its totient is φ = 985688.

The previous prime is 1031003. The next prime is 1031047. The reversal of 1031021 is 1201301.

It can be written as a sum of positive squares in only one way, i.e., 978121 + 52900 = 989^2 + 230^2 .

It is not a de Polignac number, because 1031021 - 2⁶ = 1030957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 446 + ... + 1503.

It is an arithmetic number, because the mean of its divisors is an integer number (179725).

2^1031021 is an apocalyptic number.

It is an amenable number.

1031021 is a deficient number, since it is larger than the sum of its proper divisors (47329).

1031021 is an equidigital number, since it uses as much as digits as its factorization.

1031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995 (or 1972 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 1031021 is about 1015.3920425136. The cubic root of 1031021 is about 101.0235216269.

Adding to 1031021 its reverse (1201301), we get a palindrome (2232322).

The spelling of 1031021 in words is "one million, thirty-one thousand, twenty-one".