123271321 has 2 divisors, whose sum is σ = 123271322. Its totient is φ = 123271320.

The previous prime is 123271307. The next prime is 123271331. The reversal of 123271321 is 123172321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102010000 + 21261321 = 10100^2 + 4611^2 .

It is a cyclic number.

It is not a de Polignac number, because 123271321 - 2¹¹ = 123269273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123271292 and 123271301.

It is not a weakly prime, because it can be changed into another prime (123271331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61635660 + 61635661.

It is an arithmetic number, because the mean of its divisors is an integer number (61635661).

Almost surely, 2^123271321 is an apocalyptic number.

It is an amenable number.

123271321 is a deficient number, since it is larger than the sum of its proper divisors (1).

123271321 is an equidigital number, since it uses as much as digits as its factorization.

123271321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 22.

The square root of 123271321 is about 11102.7618636085. The cubic root of 123271321 is about 497.6843870957.

The spelling of 123271321 in words is "one hundred twenty-three million, two hundred seventy-one thousand, three hundred twenty-one".