1323001131 has 4 divisors (see below), whose sum is σ = 1764001512. Its totient is φ = 882000752.

The previous prime is 1323001129. The next prime is 1323001177. The reversal of 1323001131 is 1311003231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1311003231 = 3 ⋅437001077.

It is a cyclic number.

It is not a de Polignac number, because 1323001131 - 2¹ = 1323001129 is a prime.

It is a super-2 number, since 2×1323001131² = 3500663985254558322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1323001131.

It is not an unprimeable number, because it can be changed into a prime (1323001181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220500186 + ... + 220500191.

It is an arithmetic number, because the mean of its divisors is an integer number (441000378).

Almost surely, 2^1323001131 is an apocalyptic number.

1323001131 is a deficient number, since it is larger than the sum of its proper divisors (441000381).

1323001131 is an equidigital number, since it uses as much as digits as its factorization.

1323001131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441000380.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1323001131 is about 36373.0825061611. The cubic root of 1323001131 is about 1097.7920258318.

Adding to 1323001131 its reverse (1311003231), we get a palindrome (2634004362).

The spelling of 1323001131 in words is "one billion, three hundred twenty-three million, one thousand, one hundred thirty-one".