1322303240 has 32 divisors (see below), whose sum is σ = 2989301760. Its totient is φ = 526411200.

The previous prime is 1322303237. The next prime is 1322303249. The reversal of 1322303240 is 423032231.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1322303249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69896 + ... + 86775.

It is an arithmetic number, because the mean of its divisors is an integer number (93415680).

Almost surely, 2^1322303240 is an apocalyptic number.

1322303240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322303240 is an abundant number, since it is smaller than the sum of its proper divisors (1666998520).

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

1322303240 is a wasteful number, since it uses less digits than its factorization.

1322303240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156893 (or 156889 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 1322303240 is about 36363.4877315144. The cubic root of 1322303240 is about 1097.5989612630.

Adding to 1322303240 its reverse (423032231), we get a palindrome (1745335471).

The spelling of 1322303240 in words is "one billion, three hundred twenty-two million, three hundred three thousand, two hundred forty".