655235123 has 2 divisors, whose sum is σ = 655235124. Its totient is φ = 655235122.

The previous prime is 655235111. The next prime is 655235137. The reversal of 655235123 is 321532556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 655235123 - 2¹⁶ = 655169587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 655235123.

It is not a weakly prime, because it can be changed into another prime (655235173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327617561 + 327617562.

It is an arithmetic number, because the mean of its divisors is an integer number (327617562).

Almost surely, 2^655235123 is an apocalyptic number.

655235123 is a deficient number, since it is larger than the sum of its proper divisors (1).

655235123 is an equidigital number, since it uses as much as digits as its factorization.

655235123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 32.

The square root of 655235123 is about 25597.5608798963. The cubic root of 655235123 is about 868.5584631794.

Adding to 655235123 its reverse (321532556), we get a palindrome (976767679).

The spelling of 655235123 in words is "six hundred fifty-five million, two hundred thirty-five thousand, one hundred twenty-three".