1323001140 has 24 divisors (see below), whose sum is σ = 3704403360. Its totient is φ = 352800288.

The previous prime is 1323001129. The next prime is 1323001177. The reversal of 1323001140 is 411003231.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 7 ways as a sum of consecutive naturals, for example, 11024950 + ... + 11025069.

It is an arithmetic number, because the mean of its divisors is an integer number (154350140).

Almost surely, 2^1323001140 is an apocalyptic number.

1323001140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323001140 is an abundant number, since it is smaller than the sum of its proper divisors (2381402220).

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

1323001140 is a wasteful number, since it uses less digits than its factorization.

1323001140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22050031 (or 22050029 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1323001140 is about 36373.0826298789. The cubic root of 1323001140 is about 1097.7920283211.

Adding to 1323001140 its reverse (411003231), we get a palindrome (1734004371).

It can be divided in two parts, 13 and 23001140, that added together give a triangular number (23001153 = T₆₇₈₂).

The spelling of 1323001140 in words is "one billion, three hundred twenty-three million, one thousand, one hundred forty".