1304138823 has 8 divisors (see below), whose sum is σ = 1872609648. Its totient is φ = 802546944.

The previous prime is 1304138813. The next prime is 1304138837. The reversal of 1304138823 is 3288314031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1304138823 - 2⁴ = 1304138807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304138813) 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 7 ways as a sum of consecutive naturals, for example, 16719690 + ... + 16719767.

It is an arithmetic number, because the mean of its divisors is an integer number (234076206).

Almost surely, 2^1304138823 is an apocalyptic number.

1304138823 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1304138823 is a deficient number, since it is larger than the sum of its proper divisors (568470825).

1304138823 is a wasteful number, since it uses less digits than its factorization.

1304138823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33439473.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 1304138823 is about 36112.8622930944. The cubic root of 1304138823 is about 1092.5498822237.

The spelling of 1304138823 in words is "one billion, three hundred four million, one hundred thirty-eight thousand, eight hundred twenty-three".