1012631797 has 2 divisors, whose sum is σ = 1012631798. Its totient is φ = 1012631796.

The previous prime is 1012631783. The next prime is 1012631813. The reversal of 1012631797 is 7971362101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 797158756 + 215473041 = 28234^2 + 14679^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012631797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012631297) 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 as a sum of consecutive naturals, namely, 506315898 + 506315899.

It is an arithmetic number, because the mean of its divisors is an integer number (506315899).

Almost surely, 2^1012631797 is an apocalyptic number.

It is an amenable number.

1012631797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012631797 is an equidigital number, since it uses as much as digits as its factorization.

1012631797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 1012631797 is about 31821.8760760581. The cubic root of 1012631797 is about 1004.1929932351.

Adding to 1012631797 its reverse (7971362101), we get a palindrome (8983993898).

The spelling of 1012631797 in words is "one billion, twelve million, six hundred thirty-one thousand, seven hundred ninety-seven".