234907021 has 2 divisors, whose sum is σ = 234907022. Its totient is φ = 234907020.

The previous prime is 234907007. The next prime is 234907031. The reversal of 234907021 is 120709432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218625796 + 16281225 = 14786^2 + 4035^2 .

It is a cyclic number.

It is not a de Polignac number, because 234907021 - 2¹⁷ = 234775949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (234907031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117453510 + 117453511.

It is an arithmetic number, because the mean of its divisors is an integer number (117453511).

Almost surely, 2^234907021 is an apocalyptic number.

It is an amenable number.

234907021 is a deficient number, since it is larger than the sum of its proper divisors (1).

234907021 is an equidigital number, since it uses as much as digits as its factorization.

234907021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 234907021 is about 15326.6767761312. The cubic root of 234907021 is about 617.0191821661.

The spelling of 234907021 in words is "two hundred thirty-four million, nine hundred seven thousand, twenty-one".