234031921 has 2 divisors, whose sum is σ = 234031922. Its totient is φ = 234031920.

The previous prime is 234031909. The next prime is 234031951. The reversal of 234031921 is 129130432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141871921 + 92160000 = 11911^2 + 9600^2 .

It is a cyclic number.

It is not a de Polignac number, because 234031921 - 2¹⁹ = 233507633 is a prime.

It is not a weakly prime, because it can be changed into another prime (234031901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117015960 + 117015961.

It is an arithmetic number, because the mean of its divisors is an integer number (117015961).

Almost surely, 2^234031921 is an apocalyptic number.

It is an amenable number.

234031921 is a deficient number, since it is larger than the sum of its proper divisors (1).

234031921 is an equidigital number, since it uses as much as digits as its factorization.

234031921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 234031921 is about 15298.1018757230. The cubic root of 234031921 is about 616.2520341373.

The spelling of 234031921 in words is "two hundred thirty-four million, thirty-one thousand, nine hundred twenty-one".