1431144340 has 12 divisors (see below), whose sum is σ = 3005403156. Its totient is φ = 572457728.

The previous prime is 1431144317. The next prime is 1431144397. The reversal of 1431144340 is 434411341.

It can be written as a sum of positive squares in 2 ways, for example, as 935992836 + 495151504 = 30594^2 + 22252^2 .

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, 35778589 + ... + 35778628.

It is an arithmetic number, because the mean of its divisors is an integer number (250450263).

Almost surely, 2^1431144340 is an apocalyptic number.

1431144340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1431144340 is an abundant number, since it is smaller than the sum of its proper divisors (1574258816).

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

1431144340 is a wasteful number, since it uses less digits than its factorization.

1431144340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71557226 (or 71557224 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1431144340 is about 37830.4684084139. The cubic root of 1431144340 is about 1126.9236133423.

Adding to 1431144340 its reverse (434411341), we get a palindrome (1865555681).

The spelling of 1431144340 in words is "one billion, four hundred thirty-one million, one hundred forty-four thousand, three hundred forty".