1323131 has 2 divisors, whose sum is σ = 1323132.
Its totient is φ = 1323130.
The previous prime is 1323109. The next prime is 1323137. The reversal of 1323131 is 1313231.
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-1323131 is a prime.
It is a super-2 number, since 2×13231312 = 3501351286322, which contains 22 as substring.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (1323137) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661565 + 661566.
It is an arithmetic number, because the mean of its divisors is an integer number (661566).
21323131 is an apocalyptic number.
1323131 is a deficient number, since it is larger than the sum of its proper divisors (1).
1323131 is an equidigital number, since it uses as much as digits as its factorization.
1323131 is an evil number, because the sum of its binary digits is even.
The product of its digits is 54, while the sum is 14.
The square root of 1323131 is about 1150.2743151092.
The cubic root of 1323131 is about 109.7827945299.
Adding to 1323131 its reverse (1313231), we get a palindrome (2636362).
The spelling of 1323131 in words is "one million, three hundred twenty-three thousand, one hundred thirty-one".