231805266229 has 2 divisors, whose sum is σ = 231805266230. Its totient is φ = 231805266228.

The previous prime is 231805266169. The next prime is 231805266241. The reversal of 231805266229 is 922662508132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231747885604 + 57380625 = 481402^2 + 7575^2 .

It is a cyclic number.

It is not a de Polignac number, because 231805266229 - 2⁷ = 231805266101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231805266829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115902633114 + 115902633115.

It is an arithmetic number, because the mean of its divisors is an integer number (115902633115).

Almost surely, 2^231805266229 is an apocalyptic number.

It is an amenable number.

231805266229 is a deficient number, since it is larger than the sum of its proper divisors (1).

231805266229 is an equidigital number, since it uses as much as digits as its factorization.

231805266229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 231805266229 in words is "two hundred thirty-one billion, eight hundred five million, two hundred sixty-six thousand, two hundred twenty-nine".