1061522731 has 2 divisors, whose sum is σ = 1061522732. Its totient is φ = 1061522730.

The previous prime is 1061522719. The next prime is 1061522747. The reversal of 1061522731 is 1372251601.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1061522731 - 2¹¹ = 1061520683 is a prime.

It is a super-2 number, since 2×1061522731² = 2253661016859396722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1061522731.

It is not a weakly prime, because it can be changed into another prime (1061522771) 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, 530761365 + 530761366.

It is an arithmetic number, because the mean of its divisors is an integer number (530761366).

Almost surely, 2^1061522731 is an apocalyptic number.

1061522731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061522731 is an equidigital number, since it uses as much as digits as its factorization.

1061522731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 1061522731 is about 32581.0179552450. The cubic root of 1061522731 is about 1020.1008265702.

The spelling of 1061522731 in words is "one billion, sixty-one million, five hundred twenty-two thousand, seven hundred thirty-one".