1324400401 has 4 divisors (see below), whose sum is σ = 1330234992. Its totient is φ = 1318565812.

The previous prime is 1324400359. The next prime is 1324400423. The reversal of 1324400401 is 1040044231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1040044231 = 577 ⋅1802503.

It is a cyclic number.

It is not a de Polignac number, because 1324400401 - 2¹⁷ = 1324269329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1324400501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2916955 + ... + 2917408.

It is an arithmetic number, because the mean of its divisors is an integer number (332558748).

Almost surely, 2^1324400401 is an apocalyptic number.

It is an amenable number.

1324400401 is a deficient number, since it is larger than the sum of its proper divisors (5834591).

1324400401 is an equidigital number, since it uses as much as digits as its factorization.

1324400401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5834590.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1324400401 is about 36392.3123887450. The cubic root of 1324400401 is about 1098.1789154512.

Adding to 1324400401 its reverse (1040044231), we get a palindrome (2364444632).

It can be divided in two parts, 1324400 and 401, that added together give a square (1324801 = 1151²).

The spelling of 1324400401 in words is "one billion, three hundred twenty-four million, four hundred thousand, four hundred one".