123621383 has 2 divisors, whose sum is σ = 123621384. Its totient is φ = 123621382.

The previous prime is 123621349. The next prime is 123621401. The reversal of 123621383 is 383126321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123621383 - 2¹⁸ = 123359239 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123621283) 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, 61810691 + 61810692.

It is an arithmetic number, because the mean of its divisors is an integer number (61810692).

Almost surely, 2^123621383 is an apocalyptic number.

123621383 is a deficient number, since it is larger than the sum of its proper divisors (1).

123621383 is an equidigital number, since it uses as much as digits as its factorization.

123621383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 29.

The square root of 123621383 is about 11118.5153235493. The cubic root of 123621383 is about 498.1550446528.

The spelling of 123621383 in words is "one hundred twenty-three million, six hundred twenty-one thousand, three hundred eighty-three".