1031130491 has 2 divisors, whose sum is σ = 1031130492. Its totient is φ = 1031130490.

The previous prime is 1031130481. The next prime is 1031130493. The reversal of 1031130491 is 1940311301.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1031130491 - 2¹⁸ = 1030868347 is a prime.

Together with 1031130493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1031130493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515565245 + 515565246.

It is an arithmetic number, because the mean of its divisors is an integer number (515565246).

Almost surely, 2^1031130491 is an apocalyptic number.

1031130491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031130491 is an equidigital number, since it uses as much as digits as its factorization.

1031130491 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1031130491 is about 32111.2206401438. The cubic root of 1031130491 is about 1010.2709762092.

Adding to 1031130491 its reverse (1940311301), we get a palindrome (2971441792).

The spelling of 1031130491 in words is "one billion, thirty-one million, one hundred thirty thousand, four hundred ninety-one".