1041031391 has 4 divisors (see below), whose sum is σ = 1041112800. Its totient is φ = 1040949984.

The previous prime is 1041031379. The next prime is 1041031421. The reversal of 1041031391 is 1931301401.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1931301401 = 239 ⋅8080759.

It is a cyclic number.

It is not a de Polignac number, because 1041031391 - 2¹⁴ = 1041015007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1041031351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16871 + ... + 48648.

It is an arithmetic number, because the mean of its divisors is an integer number (260278200).

Almost surely, 2^1041031391 is an apocalyptic number.

1041031391 is a deficient number, since it is larger than the sum of its proper divisors (81409).

1041031391 is an equidigital number, since it uses as much as digits as its factorization.

1041031391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81408.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1041031391 is about 32265.0180691101. The cubic root of 1041031391 is about 1013.4942173596.

Adding to 1041031391 its reverse (1931301401), we get a palindrome (2972332792).

The spelling of 1041031391 in words is "one billion, forty-one million, thirty-one thousand, three hundred ninety-one".