1031291 has 2 divisors, whose sum is σ = 1031292. Its totient is φ = 1031290.

The previous prime is 1031281. The next prime is 1031299. The reversal of 1031291 is 1921301.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1031291 - 2¹⁴ = 1014907 is a prime.

It is a super-2 number, since 2×1031291² = 2127122253362, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1031299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515645 + 515646.

It is an arithmetic number, because the mean of its divisors is an integer number (515646).

2^1031291 is an apocalyptic number.

1031291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031291 is an equidigital number, since it uses as much as digits as its factorization.

1031291 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 17.

The square root of 1031291 is about 1015.5249873834. The cubic root of 1031291 is about 101.0323394137.

Adding to 1031291 its reverse (1921301), we get a palindrome (2952592).

The spelling of 1031291 in words is "one million, thirty-one thousand, two hundred ninety-one".