1020931 has 2 divisors, whose sum is σ = 1020932. Its totient is φ = 1020930.

The previous prime is 1020913. The next prime is 1020959. The reversal of 1020931 is 1390201.

Together with previous prime (1020913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020931 - 2⁹ = 1020419 is a prime.

It is a super-2 number, since 2×1020931² = 2084600213522, which contains 22 as substring.

1020931 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1020961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510465 + 510466.

It is an arithmetic number, because the mean of its divisors is an integer number (510466).

2^1020931 is an apocalyptic number.

1020931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020931 is an equidigital number, since it uses as much as digits as its factorization.

1020931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1020931 is about 1010.4113023913. The cubic root of 1020931 is about 100.6928879742.

The spelling of 1020931 in words is "one million, twenty thousand, nine hundred thirty-one".