1020031 has 4 divisors (see below), whose sum is σ = 1029672. Its totient is φ = 1010392.

The previous prime is 1020023. The next prime is 1020037. The reversal of 1020031 is 1300201.

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 1020031 - 2³ = 1020023 is a prime.

It is a super-2 number, since 2×1020031² = 2080926481922, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1019996 and 1020023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020037) 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, 4660 + ... + 4873.

It is an arithmetic number, because the mean of its divisors is an integer number (257418).

2^1020031 is an apocalyptic number.

1020031 is a deficient number, since it is larger than the sum of its proper divisors (9641).

1020031 is an equidigital number, since it uses as much as digits as its factorization.

1020031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9640.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 1020031 is about 1009.9658410065. The cubic root of 1020031 is about 100.6632907269.

Adding to 1020031 its reverse (1300201), we get a palindrome (2320232).

The spelling of 1020031 in words is "one million, twenty thousand, thirty-one".