1323645401 has 4 divisors (see below), whose sum is σ = 1425464292. Its totient is φ = 1221826512.

The previous prime is 1323645371. The next prime is 1323645451. The reversal of 1323645401 is 1045463231.

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 496220176 + 827425225 = 22276^2 + 28765^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323645401 - 2¹⁴ = 1323629017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1323645451) 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, 50909426 + ... + 50909451.

It is an arithmetic number, because the mean of its divisors is an integer number (356366073).

Almost surely, 2^1323645401 is an apocalyptic number.

It is an amenable number.

1323645401 is a deficient number, since it is larger than the sum of its proper divisors (101818891).

1323645401 is a wasteful number, since it uses less digits than its factorization.

1323645401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101818890.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1323645401 is about 36381.9378400876. The cubic root of 1323645401 is about 1097.9701964255.

The spelling of 1323645401 in words is "one billion, three hundred twenty-three million, six hundred forty-five thousand, four hundred one".