1712721116231 has 2 divisors, whose sum is σ = 1712721116232. Its totient is φ = 1712721116230.

The previous prime is 1712721116213. The next prime is 1712721116261. The reversal of 1712721116231 is 1326111272171.

Together with previous prime (1712721116213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1712721116231 - 2¹⁰ = 1712721115207 is a prime.

It is a super-2 number, since 2×1712721116231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1712721116191 and 1712721116200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1712721116261) 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, 856360558115 + 856360558116.

It is an arithmetic number, because the mean of its divisors is an integer number (856360558116).

Almost surely, 2^{1712721116231} is an apocalyptic number.

1712721116231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1712721116231 is an equidigital number, since it uses as much as digits as its factorization.

1712721116231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 35.

The spelling of 1712721116231 in words is "one trillion, seven hundred twelve billion, seven hundred twenty-one million, one hundred sixteen thousand, two hundred thirty-one".