291085120229 has 2 divisors, whose sum is σ = 291085120230. Its totient is φ = 291085120228.

The previous prime is 291085120201. The next prime is 291085120247. The reversal of 291085120229 is 922021580192.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160742459329 + 130342660900 = 400927^2 + 361030^2 .

It is a cyclic number.

It is not a de Polignac number, because 291085120229 - 2¹⁶ = 291085054693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (291075120229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145542560114 + 145542560115.

It is an arithmetic number, because the mean of its divisors is an integer number (145542560115).

Almost surely, 2^291085120229 is an apocalyptic number.

It is an amenable number.

291085120229 is a deficient number, since it is larger than the sum of its proper divisors (1).

291085120229 is an equidigital number, since it uses as much as digits as its factorization.

291085120229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 41.

The spelling of 291085120229 in words is "two hundred ninety-one billion, eighty-five million, one hundred twenty thousand, two hundred twenty-nine".