123551383 has 2 divisors, whose sum is σ = 123551384. Its totient is φ = 123551382.

The previous prime is 123551353. The next prime is 123551419. The reversal of 123551383 is 383155321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123551383 - 2¹³ = 123543191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123551353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61775691 + 61775692.

It is an arithmetic number, because the mean of its divisors is an integer number (61775692).

Almost surely, 2^123551383 is an apocalyptic number.

123551383 is a deficient number, since it is larger than the sum of its proper divisors (1).

123551383 is an equidigital number, since it uses as much as digits as its factorization.

123551383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 31.

The square root of 123551383 is about 11115.3669754984. The cubic root of 123551383 is about 498.0610009522.

The spelling of 123551383 in words is "one hundred twenty-three million, five hundred fifty-one thousand, three hundred eighty-three".