1432131440 has 20 divisors (see below), whose sum is σ = 3329705784. Its totient is φ = 572852544.

The previous prime is 1432131427. The next prime is 1432131451. The reversal of 1432131440 is 441312341.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×1432131440² = 4102000922872947200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8950742 + ... + 8950901.

Almost surely, 2^1432131440 is an apocalyptic number.

1432131440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1432131440 is an abundant number, since it is smaller than the sum of its proper divisors (1897574344).

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

1432131440 is a wasteful number, since it uses less digits than its factorization.

1432131440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17901656 (or 17901650 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1432131440 is about 37843.5125219634. The cubic root of 1432131440 is about 1127.1826439697.

Adding to 1432131440 its reverse (441312341), we get a palindrome (1873443781).

The spelling of 1432131440 in words is "one billion, four hundred thirty-two million, one hundred thirty-one thousand, four hundred forty".