31143211230017 has 2 divisors, whose sum is σ = 31143211230018. Its totient is φ = 31143211230016.

The previous prime is 31143211229989. The next prime is 31143211230031. The reversal of 31143211230017 is 71003211234113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29068908450481 + 2074302779536 = 5391559^2 + 1440244^2 .

It is a cyclic number.

It is not a de Polignac number, because 31143211230017 - 2¹⁴ = 31143211213633 is a prime.

It is not a weakly prime, because it can be changed into another prime (31143211230077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15571605615008 + 15571605615009.

It is an arithmetic number, because the mean of its divisors is an integer number (15571605615009).

Almost surely, 2^{31143211230017} is an apocalyptic number.

It is an amenable number.

31143211230017 is a deficient number, since it is larger than the sum of its proper divisors (1).

31143211230017 is an equidigital number, since it uses as much as digits as its factorization.

31143211230017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The spelling of 31143211230017 in words is "thirty-one trillion, one hundred forty-three billion, two hundred eleven million, two hundred thirty thousand, seventeen".