243402373 has 2 divisors, whose sum is σ = 243402374. Its totient is φ = 243402372.

The previous prime is 243402371. The next prime is 243402409. The reversal of 243402373 is 373204342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236605924 + 6796449 = 15382^2 + 2607^2 .

It is a cyclic number.

It is not a de Polignac number, because 243402373 - 2¹ = 243402371 is a prime.

It is a super-2 number, since 2×243402373² = 118489430364062258, which contains 22 as substring.

Together with 243402371, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243402371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121701186 + 121701187.

It is an arithmetic number, because the mean of its divisors is an integer number (121701187).

Almost surely, 2^243402373 is an apocalyptic number.

It is an amenable number.

243402373 is a deficient number, since it is larger than the sum of its proper divisors (1).

243402373 is an equidigital number, since it uses as much as digits as its factorization.

243402373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 28.

The square root of 243402373 is about 15601.3580498622. The cubic root of 243402373 is about 624.3693889014.

The spelling of 243402373 in words is "two hundred forty-three million, four hundred two thousand, three hundred seventy-three".