1431041240 has 64 divisors (see below), whose sum is σ = 3397248000. Its totient is φ = 541019520.

The previous prime is 1431041237. The next prime is 1431041257. The reversal of 1431041240 is 421401341.

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

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 15 ways as a sum of consecutive naturals, for example, 362075 + ... + 366005.

It is an arithmetic number, because the mean of its divisors is an integer number (53082000).

Almost surely, 2^1431041240 is an apocalyptic number.

1431041240 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 1431041240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1698624000).

1431041240 is an abundant number, since it is smaller than the sum of its proper divisors (1966206760).

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

1431041240 is a wasteful number, since it uses less digits than its factorization.

1431041240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4440 (or 4436 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1431041240 is about 37829.1057256182. The cubic root of 1431041240 is about 1126.8965514051.

Adding to 1431041240 its reverse (421401341), we get a palindrome (1852442581).

The spelling of 1431041240 in words is "one billion, four hundred thirty-one million, forty-one thousand, two hundred forty".