123671329 has 2 divisors, whose sum is σ = 123671330. Its totient is φ = 123671328.

The previous prime is 123671321. The next prime is 123671371. The reversal of 123671329 is 923176321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109683729 + 13987600 = 10473^2 + 3740^2 .

It is a cyclic number.

It is not a de Polignac number, because 123671329 - 2³ = 123671321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123671294 and 123671303.

It is not a weakly prime, because it can be changed into another prime (123671321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61835664 + 61835665.

It is an arithmetic number, because the mean of its divisors is an integer number (61835665).

Almost surely, 2^123671329 is an apocalyptic number.

It is an amenable number.

123671329 is a deficient number, since it is larger than the sum of its proper divisors (1).

123671329 is an equidigital number, since it uses as much as digits as its factorization.

123671329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 34.

The square root of 123671329 is about 11120.7611699919. The cubic root of 123671329 is about 498.2221244767. Note that the first 3 decimals are identical.

The spelling of 123671329 in words is "one hundred twenty-three million, six hundred seventy-one thousand, three hundred twenty-nine".