1720510122731 has 2 divisors, whose sum is σ = 1720510122732. Its totient is φ = 1720510122730.

The previous prime is 1720510122697. The next prime is 1720510122733. The reversal of 1720510122731 is 1372210150271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1720510122731 - 2¹⁴ = 1720510106347 is a prime.

It is a super-2 number, since 2×1720510122731² (a number of 25 digits) contains 22 as substring.

Together with 1720510122733, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1720510122733) 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, 860255061365 + 860255061366.

It is an arithmetic number, because the mean of its divisors is an integer number (860255061366).

Almost surely, 2^{1720510122731} is an apocalyptic number.

1720510122731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1720510122731 is an equidigital number, since it uses as much as digits as its factorization.

1720510122731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 32.

The spelling of 1720510122731 in words is "one trillion, seven hundred twenty billion, five hundred ten million, one hundred twenty-two thousand, seven hundred thirty-one".