7031021 has 4 divisors (see below), whose sum is σ = 7273500. Its totient is φ = 6788544.

The previous prime is 7030997. The next prime is 7031023. The reversal of 7031021 is 1201307.

7031021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2515396 + 4515625 = 1586^2 + 2125^2 .

It is a cyclic number.

It is not a de Polignac number, because 7031021 - 2⁶ = 7030957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7030987 and 7031005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7031023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121196 + ... + 121253.

It is an arithmetic number, because the mean of its divisors is an integer number (1818375).

Almost surely, 2^7031021 is an apocalyptic number.

It is an amenable number.

7031021 is a deficient number, since it is larger than the sum of its proper divisors (242479).

7031021 is a wasteful number, since it uses less digits than its factorization.

7031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242478.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 7031021 is about 2651.6072484439. The cubic root of 7031021 is about 191.5752782552.

Adding to 7031021 its reverse (1201307), we get a palindrome (8232328).

The spelling of 7031021 in words is "seven million, thirty-one thousand, twenty-one".