1323881 has 4 divisors (see below), whose sum is σ = 1425732. Its totient is φ = 1222032.

The previous prime is 1323877. The next prime is 1323893. The reversal of 1323881 is 1883231.

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 477481 + 846400 = 691^2 + 920^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323881 - 2² = 1323877 is a prime.

It is a super-2 number, since 2×1323881² = 3505321804322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 1323881.

It is not an unprimeable number, because it can be changed into a prime (1323851) 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, 50906 + ... + 50931.

It is an arithmetic number, because the mean of its divisors is an integer number (356433).

2^1323881 is an apocalyptic number.

It is an amenable number.

1323881 is a deficient number, since it is larger than the sum of its proper divisors (101851).

1323881 is a wasteful number, since it uses less digits than its factorization.

1323881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101850.

The product of its digits is 1152, while the sum is 26.

The square root of 1323881 is about 1150.6002781157. The cubic root of 1323881 is about 109.8035336060.

The spelling of 1323881 in words is "one million, three hundred twenty-three thousand, eight hundred eighty-one".