231515004004289 has 2 divisors, whose sum is σ = 231515004004290. Its totient is φ = 231515004004288.

The previous prime is 231515004004159. The next prime is 231515004004327. The reversal of 231515004004289 is 982400400515132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225467732829889 + 6047271174400 = 15015583^2 + 2459120^2 .

It is a cyclic number.

It is not a de Polignac number, because 231515004004289 - 2²⁰ = 231515002955713 is a prime.

It is not a weakly prime, because it can be changed into another prime (231515004094289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115757502002144 + 115757502002145.

It is an arithmetic number, because the mean of its divisors is an integer number (115757502002145).

Almost surely, 2^{231515004004289} is an apocalyptic number.

It is an amenable number.

231515004004289 is a deficient number, since it is larger than the sum of its proper divisors (1).

231515004004289 is an equidigital number, since it uses as much as digits as its factorization.

231515004004289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 231515004004289 in words is "two hundred thirty-one trillion, five hundred fifteen billion, four million, four thousand, two hundred eighty-nine".