123353257 has 2 divisors, whose sum is σ = 123353258. Its totient is φ = 123353256.

The previous prime is 123353249. The next prime is 123353261. The reversal of 123353257 is 752353321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80568576 + 42784681 = 8976^2 + 6541^2 .

It is a cyclic number.

It is not a de Polignac number, because 123353257 - 2³ = 123353249 is a prime.

It is not a weakly prime, because it can be changed into another prime (123353267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61676628 + 61676629.

It is an arithmetic number, because the mean of its divisors is an integer number (61676629).

Almost surely, 2^123353257 is an apocalyptic number.

It is an amenable number.

123353257 is a deficient number, since it is larger than the sum of its proper divisors (1).

123353257 is an equidigital number, since it uses as much as digits as its factorization.

123353257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 31.

The square root of 123353257 is about 11106.4511433671. The cubic root of 123353257 is about 497.7946296515.

The spelling of 123353257 in words is "one hundred twenty-three million, three hundred fifty-three thousand, two hundred fifty-seven".