1323551412 has 36 divisors (see below), whose sum is σ = 3350676420. Its totient is φ = 440520192.

The previous prime is 1323551401. The next prime is 1323551413. The reversal of 1323551412 is 2141553231.

1323551412 is a `hidden beast` number, since 13 + 235 + 5 + 1 + 412 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 662238756 + 661312656 = 25734^2 + 25716^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323551413) 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 11 ways as a sum of consecutive naturals, for example, 3087 + ... + 51542.

It is an arithmetic number, because the mean of its divisors is an integer number (93074345).

Almost surely, 2^1323551412 is an apocalyptic number.

1323551412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1323551412 is an abundant number, since it is smaller than the sum of its proper divisors (2027125008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1323551412 is a wasteful number, since it uses less digits than its factorization.

1323551412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55312 (or 55307 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1323551412 is about 36380.6461185065. The cubic root of 1323551412 is about 1097.9442077019.

The spelling of 1323551412 in words is "one billion, three hundred twenty-three million, five hundred fifty-one thousand, four hundred twelve".