1325443123 has 4 divisors (see below), whose sum is σ = 1344111408. Its totient is φ = 1306774840.

The previous prime is 1325443117. The next prime is 1325443127. The reversal of 1325443123 is 3213445231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1325443123 is a prime.

It is a super-3 number, since 3×1325443123³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1325443091 and 1325443100.

It is not an unprimeable number, because it can be changed into a prime (1325443127) 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, 9334036 + ... + 9334177.

It is an arithmetic number, because the mean of its divisors is an integer number (336027852).

Almost surely, 2^1325443123 is an apocalyptic number.

1325443123 is a deficient number, since it is larger than the sum of its proper divisors (18668285).

1325443123 is an equidigital number, since it uses as much as digits as its factorization.

1325443123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18668284.

The product of its digits is 8640, while the sum is 28.

The square root of 1325443123 is about 36406.6357001028. The cubic root of 1325443123 is about 1098.4670445619.

Adding to 1325443123 its reverse (3213445231), we get a palindrome (4538888354).

The spelling of 1325443123 in words is "one billion, three hundred twenty-five million, four hundred forty-three thousand, one hundred twenty-three".