1431224340 has 144 divisors (see below), whose sum is σ = 5020428672. Its totient is φ = 301964544.

The previous prime is 1431224323. The next prime is 1431224359. The reversal of 1431224340 is 434221341.

It is a super-2 number, since 2×1431224340² = 4096806222816871200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1431224340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19497 + ... + 56943.

It is an arithmetic number, because the mean of its divisors is an integer number (34864088).

Almost surely, 2^1431224340 is an apocalyptic number.

1431224340 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 1431224340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2510214336).

1431224340 is an abundant number, since it is smaller than the sum of its proper divisors (3589204332).

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

1431224340 is a wasteful number, since it uses less digits than its factorization.

1431224340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37486 (or 37477 counting only the distinct ones).

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

The square root of 1431224340 is about 37831.5257424281. The cubic root of 1431224340 is about 1126.9446110402.

Adding to 1431224340 its reverse (434221341), we get a palindrome (1865445681).

Subtracting from 1431224340 its reverse (434221341), we obtain a cube (997002999 = 999³).

The spelling of 1431224340 in words is "one billion, four hundred thirty-one million, two hundred twenty-four thousand, three hundred forty".