243900733 has 2 divisors, whose sum is σ = 243900734. Its totient is φ = 243900732.

The previous prime is 243900667. The next prime is 243900743. The reversal of 243900733 is 337009342.

243900733 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128187684 + 115713049 = 11322^2 + 10757^2 .

It is a cyclic number.

It is not a de Polignac number, because 243900733 - 2²¹ = 241803581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243900695 and 243900704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243900743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121950366 + 121950367.

It is an arithmetic number, because the mean of its divisors is an integer number (121950367).

Almost surely, 2^243900733 is an apocalyptic number.

It is an amenable number.

243900733 is a deficient number, since it is larger than the sum of its proper divisors (1).

243900733 is an equidigital number, since it uses as much as digits as its factorization.

243900733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 31.

The square root of 243900733 is about 15617.3215693345. The cubic root of 243900733 is about 624.7952250749.

The spelling of 243900733 in words is "two hundred forty-three million, nine hundred thousand, seven hundred thirty-three".