1021713 has 16 divisors (see below), whose sum is σ = 1698816. Its totient is φ = 530640.

The previous prime is 1021711. The next prime is 1021747. The reversal of 1021713 is 3171201.

It is not a de Polignac number, because 1021713 - 2¹ = 1021711 is a prime.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1021692 and 1021701.

It is not an unprimeable number, because it can be changed into a prime (1021711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1981 + ... + 2442.

It is an arithmetic number, because the mean of its divisors is an integer number (106176).

2^1021713 is an apocalyptic number.

It is an amenable number.

1021713 is a deficient number, since it is larger than the sum of its proper divisors (677103).

1021713 is a wasteful number, since it uses less digits than its factorization.

1021713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4444.

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 1021713 is about 1010.7981994444. The cubic root of 1021713 is about 100.7185905739.

Adding to 1021713 its reverse (3171201), we get a palindrome (4192914).

The spelling of 1021713 in words is "one million, twenty-one thousand, seven hundred thirteen".