123152321 has 2 divisors, whose sum is σ = 123152322. Its totient is φ = 123152320.

The previous prime is 123152311. The next prime is 123152333. The reversal of 123152321 is 123251321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66601921 + 56550400 = 8161^2 + 7520^2 .

It is an emirp because it is prime and its reverse (123251321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123152321 - 2⁶ = 123152257 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 123152293 and 123152302.

It is not a weakly prime, because it can be changed into another prime (123152311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61576160 + 61576161.

It is an arithmetic number, because the mean of its divisors is an integer number (61576161).

Almost surely, 2^123152321 is an apocalyptic number.

It is an amenable number.

123152321 is a deficient number, since it is larger than the sum of its proper divisors (1).

123152321 is an equidigital number, since it uses as much as digits as its factorization.

123152321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 20.

The square root of 123152321 is about 11097.4015427036. The cubic root of 123152321 is about 497.5241889538.

The spelling of 123152321 in words is "one hundred twenty-three million, one hundred fifty-two thousand, three hundred twenty-one".