234307657 has 2 divisors, whose sum is σ = 234307658. Its totient is φ = 234307656.

The previous prime is 234307631. The next prime is 234307673. The reversal of 234307657 is 756703432.

234307657 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., 221087161 + 13220496 = 14869^2 + 3636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234307657 is a prime.

It is not a weakly prime, because it can be changed into another prime (234307057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117153828 + 117153829.

It is an arithmetic number, because the mean of its divisors is an integer number (117153829).

Almost surely, 2^234307657 is an apocalyptic number.

It is an amenable number.

234307657 is a deficient number, since it is larger than the sum of its proper divisors (1).

234307657 is an equidigital number, since it uses as much as digits as its factorization.

234307657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 37.

The square root of 234307657 is about 15307.1113212128. Note that the first 3 decimals coincide. The cubic root of 234307657 is about 616.4939615056.

The spelling of 234307657 in words is "two hundred thirty-four million, three hundred seven thousand, six hundred fifty-seven".