123948217 has 2 divisors, whose sum is σ = 123948218. Its totient is φ = 123948216.

The previous prime is 123948211. The next prime is 123948221. The reversal of 123948217 is 712849321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71588521 + 52359696 = 8461^2 + 7236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123948217 is a prime.

It is not a weakly prime, because it can be changed into another prime (123948211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61974108 + 61974109.

It is an arithmetic number, because the mean of its divisors is an integer number (61974109).

Almost surely, 2^123948217 is an apocalyptic number.

It is an amenable number.

123948217 is a deficient number, since it is larger than the sum of its proper divisors (1).

123948217 is an equidigital number, since it uses as much as digits as its factorization.

123948217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 37.

The square root of 123948217 is about 11133.2033575247. The cubic root of 123948217 is about 498.5936708518.

The spelling of 123948217 in words is "one hundred twenty-three million, nine hundred forty-eight thousand, two hundred seventeen".