1324256401 has 4 divisors (see below), whose sum is σ = 1426122292. Its totient is φ = 1222390512.

The previous prime is 1324256383. The next prime is 1324256413. The reversal of 1324256401 is 1046524231.

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

It can be written as a sum of positive squares in 2 ways, for example, as 55115776 + 1269140625 = 7424^2 + 35625^2 .

It is a cyclic number.

It is not a de Polignac number, because 1324256401 - 2¹¹ = 1324254353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1324256401.

It is not an unprimeable number, because it can be changed into a prime (1324256201) 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, 50932926 + ... + 50932951.

It is an arithmetic number, because the mean of its divisors is an integer number (356530573).

Almost surely, 2^1324256401 is an apocalyptic number.

It is an amenable number.

1324256401 is a deficient number, since it is larger than the sum of its proper divisors (101865891).

1324256401 is a wasteful number, since it uses less digits than its factorization.

1324256401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101865890.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1324256401 is about 36390.3338951431. Note that the first 3 decimals coincide. The cubic root of 1324256401 is about 1098.1391129123.

The spelling of 1324256401 in words is "one billion, three hundred twenty-four million, two hundred fifty-six thousand, four hundred one".