1431227420 has 24 divisors (see below), whose sum is σ = 3434946144. Its totient is φ = 490706496.

The previous prime is 1431227419. The next prime is 1431227429. The reversal of 1431227420 is 247221341.

It is a self number, because there is not a number n which added to its sum of digits gives 1431227420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431227429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5111387 + ... + 5111666.

It is an arithmetic number, because the mean of its divisors is an integer number (143122756).

Almost surely, 2^1431227420 is an apocalyptic number.

1431227420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1431227420 is an abundant number, since it is smaller than the sum of its proper divisors (2003718724).

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

1431227420 is a wasteful number, since it uses less digits than its factorization.

1431227420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10223069 (or 10223067 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 1431227420 is about 37831.5664491969. The cubic root of 1431227420 is about 1126.9454194359.

Adding to 1431227420 its reverse (247221341), we get a palindrome (1678448761).

The spelling of 1431227420 in words is "one billion, four hundred thirty-one million, two hundred twenty-seven thousand, four hundred twenty".