31231301210017 has 2 divisors, whose sum is σ = 31231301210018. Its totient is φ = 31231301210016.

The previous prime is 31231301209973. The next prime is 31231301210033. The reversal of 31231301210017 is 71001210313213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30205312516096 + 1025988693921 = 5495936^2 + 1012911^2 .

It is a cyclic number.

It is not a de Polignac number, because 31231301210017 - 2¹⁹ = 31231300685729 is a prime.

It is a super-2 number, since 2×31231301210017² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31231301209973 and 31231301210000.

It is not a weakly prime, because it can be changed into another prime (31231301210617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15615650605008 + 15615650605009.

It is an arithmetic number, because the mean of its divisors is an integer number (15615650605009).

Almost surely, 2^{31231301210017} is an apocalyptic number.

It is an amenable number.

31231301210017 is a deficient number, since it is larger than the sum of its proper divisors (1).

31231301210017 is an equidigital number, since it uses as much as digits as its factorization.

31231301210017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The spelling of 31231301210017 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred one million, two hundred ten thousand, seventeen".