1323131004 has 48 divisors (see below), whose sum is σ = 3694215840. Its totient is φ = 407116800.

The previous prime is 1323130999. The next prime is 1323131039. The reversal of 1323131004 is 4001313231.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 469797 + ... + 472604.

It is an arithmetic number, because the mean of its divisors is an integer number (76962830).

Almost surely, 2^1323131004 is an apocalyptic number.

It is an amenable number.

1323131004 is an abundant number, since it is smaller than the sum of its proper divisors (2371084836).

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

1323131004 is a wasteful number, since it uses less digits than its factorization.

1323131004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942427 (or 942419 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1323131004 is about 36374.8677523369. The cubic root of 1323131004 is about 1097.8279464055.

Adding to 1323131004 its reverse (4001313231), we get a palindrome (5324444235).

The spelling of 1323131004 in words is "one billion, three hundred twenty-three million, one hundred thirty-one thousand, four".