531314656309 has 2 divisors, whose sum is σ = 531314656310. Its totient is φ = 531314656308.

The previous prime is 531314656231. The next prime is 531314656507. The reversal of 531314656309 is 903656413135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 531229611025 + 85045284 = 728855^2 + 9222^2 .

It is a cyclic number.

It is not a de Polignac number, because 531314656309 - 2⁹ = 531314655797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531314650309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265657328154 + 265657328155.

It is an arithmetic number, because the mean of its divisors is an integer number (265657328155).

Almost surely, 2^531314656309 is an apocalyptic number.

It is an amenable number.

531314656309 is a deficient number, since it is larger than the sum of its proper divisors (1).

531314656309 is an equidigital number, since it uses as much as digits as its factorization.

531314656309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 874800, while the sum is 46.

The spelling of 531314656309 in words is "five hundred thirty-one billion, three hundred fourteen million, six hundred fifty-six thousand, three hundred nine".