1002681731 has 2 divisors, whose sum is σ = 1002681732. Its totient is φ = 1002681730.

The previous prime is 1002681721. The next prime is 1002681739. The reversal of 1002681731 is 1371862001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002681731 is a prime.

It is a super-2 number, since 2×1002681731² = 2010741307362312722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1002681694 and 1002681703.

It is not a weakly prime, because it can be changed into another prime (1002681739) 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, 501340865 + 501340866.

It is an arithmetic number, because the mean of its divisors is an integer number (501340866).

Almost surely, 2^1002681731 is an apocalyptic number.

1002681731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002681731 is an equidigital number, since it uses as much as digits as its factorization.

1002681731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1002681731 is about 31665.1501022812. The cubic root of 1002681731 is about 1000.8931124460.

The spelling of 1002681731 in words is "one billion, two million, six hundred eighty-one thousand, seven hundred thirty-one".