1324431240 has 128 divisors (see below), whose sum is σ = 4589550720. Its totient is φ = 302182400.

The previous prime is 1324431217. The next prime is 1324431263. The reversal of 1324431240 is 421344231.

It is an interprime number because it is at equal distance from previous prime (1324431217) and next prime (1324431263).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1324431240.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7071 + ... + 51950.

It is an arithmetic number, because the mean of its divisors is an integer number (35855865).

Almost surely, 2^1324431240 is an apocalyptic number.

1324431240 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 1324431240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2294775360).

1324431240 is an abundant number, since it is smaller than the sum of its proper divisors (3265119480).

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

1324431240 is a wasteful number, since it uses less digits than its factorization.

1324431240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59063 (or 59059 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1324431240 is about 36392.7360884009. The cubic root of 1324431240 is about 1098.1874391768.

Adding to 1324431240 its reverse (421344231), we get a palindrome (1745775471).

The spelling of 1324431240 in words is "one billion, three hundred twenty-four million, four hundred thirty-one thousand, two hundred forty".