231665339201 has 2 divisors, whose sum is σ = 231665339202. Its totient is φ = 231665339200.

The previous prime is 231665339177. The next prime is 231665339221. The reversal of 231665339201 is 102933566132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149997417025 + 81667922176 = 387295^2 + 285776^2 .

It is a cyclic number.

It is not a de Polignac number, because 231665339201 - 2²⁶ = 231598230337 is a prime.

It is a super-2 number, since 2×231665339201² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231665339221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115832669600 + 115832669601.

It is an arithmetic number, because the mean of its divisors is an integer number (115832669601).

Almost surely, 2^231665339201 is an apocalyptic number.

It is an amenable number.

231665339201 is a deficient number, since it is larger than the sum of its proper divisors (1).

231665339201 is an equidigital number, since it uses as much as digits as its factorization.

231665339201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 41.

The spelling of 231665339201 in words is "two hundred thirty-one billion, six hundred sixty-five million, three hundred thirty-nine thousand, two hundred one".