123314021 has 2 divisors, whose sum is σ = 123314022. Its totient is φ = 123314020.

The previous prime is 123313991. The next prime is 123314077. The reversal of 123314021 is 120413321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122965921 + 348100 = 11089^2 + 590^2 .

It is a cyclic number.

It is not a de Polignac number, because 123314021 - 2²² = 119119717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123310021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61657010 + 61657011.

It is an arithmetic number, because the mean of its divisors is an integer number (61657011).

Almost surely, 2^123314021 is an apocalyptic number.

It is an amenable number.

123314021 is a deficient number, since it is larger than the sum of its proper divisors (1).

123314021 is an equidigital number, since it uses as much as digits as its factorization.

123314021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 123314021 is about 11104.6846420779. The cubic root of 123314021 is about 497.7418448236.

Adding to 123314021 its reverse (120413321), we get a palindrome (243727342).

The spelling of 123314021 in words is "one hundred twenty-three million, three hundred fourteen thousand, twenty-one".