234749981 has 2 divisors, whose sum is σ = 234749982. Its totient is φ = 234749980.

The previous prime is 234749971. The next prime is 234749987. The reversal of 234749981 is 189947432.

234749981 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., 147233956 + 87516025 = 12134^2 + 9355^2 .

It is a cyclic number.

It is not a de Polignac number, because 234749981 - 2⁶ = 234749917 is a prime.

It is a super-2 number, since 2×234749981² = 110215107159000722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (234749987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117374990 + 117374991.

It is an arithmetic number, because the mean of its divisors is an integer number (117374991).

Almost surely, 2^234749981 is an apocalyptic number.

It is an amenable number.

234749981 is a deficient number, since it is larger than the sum of its proper divisors (1).

234749981 is an equidigital number, since it uses as much as digits as its factorization.

234749981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 47.

The square root of 234749981 is about 15321.5528260030. The cubic root of 234749981 is about 616.8816549970.

The spelling of 234749981 in words is "two hundred thirty-four million, seven hundred forty-nine thousand, nine hundred eighty-one".