1327431240 has 192 divisors, whose sum is σ = 4596096960. Its totient is φ = 344321280.

The previous prime is 1327431229. The next prime is 1327431241. The reversal of 1327431240 is 421347231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1327431241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 357795 + ... + 361485.

It is an arithmetic number, because the mean of its divisors is an integer number (23938005).

Almost surely, 2^1327431240 is an apocalyptic number.

1327431240 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 1327431240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2298048480).

1327431240 is an abundant number, since it is smaller than the sum of its proper divisors (3268665720).

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

1327431240 is a wasteful number, since it uses less digits than its factorization.

1327431240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3754 (or 3738 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 1327431240 is about 36433.9297907870. The cubic root of 1327431240 is about 1099.0159905362.

Adding to 1327431240 its reverse (421347231), we get a palindrome (1748778471).

The spelling of 1327431240 in words is "one billion, three hundred twenty-seven million, four hundred thirty-one thousand, two hundred forty".