234340400993 has 2 divisors, whose sum is σ = 234340400994. Its totient is φ = 234340400992.

The previous prime is 234340400989. The next prime is 234340401011. The reversal of 234340400993 is 399004043432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160526031649 + 73814369344 = 400657^2 + 271688^2 .

It is a cyclic number.

It is not a de Polignac number, because 234340400993 - 2² = 234340400989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 234340400993.

It is not a weakly prime, because it can be changed into another prime (234340400933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117170200496 + 117170200497.

It is an arithmetic number, because the mean of its divisors is an integer number (117170200497).

Almost surely, 2^234340400993 is an apocalyptic number.

It is an amenable number.

234340400993 is a deficient number, since it is larger than the sum of its proper divisors (1).

234340400993 is an equidigital number, since it uses as much as digits as its factorization.

234340400993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 41.

The spelling of 234340400993 in words is "two hundred thirty-four billion, three hundred forty million, four hundred thousand, nine hundred ninety-three".