1323131401 has 2 divisors, whose sum is σ = 1323131402. Its totient is φ = 1323131400.

The previous prime is 1323131399. The next prime is 1323131423. The reversal of 1323131401 is 1041313231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1045875600 + 277255801 = 32340^2 + 16651^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323131401 - 2¹ = 1323131399 is a prime.

It is a super-3 number, since 3×1323131401³ (a number of 28 digits) contains 333 as substring.

Together with 1323131399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1323132401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661565700 + 661565701.

It is an arithmetic number, because the mean of its divisors is an integer number (661565701).

Almost surely, 2^1323131401 is an apocalyptic number.

It is an amenable number.

1323131401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323131401 is an equidigital number, since it uses as much as digits as its factorization.

1323131401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1323131401 is about 36374.8732094010. The cubic root of 1323131401 is about 1097.8280562050.

Adding to 1323131401 its reverse (1041313231), we get a palindrome (2364444632).

The spelling of 1323131401 in words is "one billion, three hundred twenty-three million, one hundred thirty-one thousand, four hundred one".