1031489 has 2 divisors, whose sum is σ = 1031490. Its totient is φ = 1031488.

The previous prime is 1031483. The next prime is 1031507. The reversal of 1031489 is 9841301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 824464 + 207025 = 908^2 + 455^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031489 - 2¹⁶ = 965953 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1031483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515744 + 515745.

It is an arithmetic number, because the mean of its divisors is an integer number (515745).

2^1031489 is an apocalyptic number.

It is an amenable number.

1031489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031489 is an equidigital number, since it uses as much as digits as its factorization.

1031489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1031489 is about 1015.6224692276. The cubic root of 1031489 is about 101.0388048126.

The spelling of 1031489 in words is "one million, thirty-one thousand, four hundred eighty-nine".