581731120417 has 2 divisors, whose sum is σ = 581731120418. Its totient is φ = 581731120416.

The previous prime is 581731120367. The next prime is 581731120427. The reversal of 581731120417 is 714021137185.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 552667349056 + 29063771361 = 743416^2 + 170481^2 .

It is a cyclic number.

It is not a de Polignac number, because 581731120417 - 2¹¹ = 581731118369 is a prime.

It is a super-2 number, since 2×581731120417² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 581731120417.

It is not a weakly prime, because it can be changed into another prime (581731120427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290865560208 + 290865560209.

It is an arithmetic number, because the mean of its divisors is an integer number (290865560209).

Almost surely, 2^581731120417 is an apocalyptic number.

It is an amenable number.

581731120417 is a deficient number, since it is larger than the sum of its proper divisors (1).

581731120417 is an equidigital number, since it uses as much as digits as its factorization.

581731120417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 40.

The spelling of 581731120417 in words is "five hundred eighty-one billion, seven hundred thirty-one million, one hundred twenty thousand, four hundred seventeen".