1322231040 has 504 divisors, whose sum is σ = 5160752520. Its totient is φ = 322486272.

The previous prime is 1322231039. The next prime is 1322231051. The reversal of 1322231040 is 401322231.

It can be written as a sum of positive squares in 4 ways, for example, as 67371264 + 1254859776 = 8208^2 + 35424^2 .

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 polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 12130506 + ... + 12130614.

Almost surely, 2^1322231040 is an apocalyptic number.

1322231040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1322231040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2580376260).

1322231040 is an abundant number, since it is smaller than the sum of its proper divisors (3838521480).

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

1322231040 is an equidigital number, since it uses as much as digits as its factorization.

1322231040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1322231040 is about 36362.4949639048. The cubic root of 1322231040 is about 1097.5789839777.

Adding to 1322231040 its reverse (401322231), we get a palindrome (1723553271).

The spelling of 1322231040 in words is "one billion, three hundred twenty-two million, two hundred thirty-one thousand, forty".