864002731 has 2 divisors, whose sum is σ = 864002732. Its totient is φ = 864002730.

The previous prime is 864002729. The next prime is 864002743. The reversal of 864002731 is 137200468.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 864002731 - 2¹ = 864002729 is a prime.

It is a super-2 number, since 2×864002731² = 1493001438350916722, which contains 22 as substring.

Together with 864002729, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 864002693 and 864002702.

It is not a weakly prime, because it can be changed into another prime (864002701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432001365 + 432001366.

It is an arithmetic number, because the mean of its divisors is an integer number (432001366).

Almost surely, 2^864002731 is an apocalyptic number.

864002731 is a deficient number, since it is larger than the sum of its proper divisors (1).

864002731 is an equidigital number, since it uses as much as digits as its factorization.

864002731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 864002731 is about 29393.9233686148. The cubic root of 864002731 is about 952.4416346966.

The spelling of 864002731 in words is "eight hundred sixty-four million, two thousand, seven hundred thirty-one".