1431222340 has 12 divisors (see below), whose sum is σ = 3005566956. Its totient is φ = 572488928.

The previous prime is 1431222337. The next prime is 1431222341. The reversal of 1431222340 is 432221341.

It can be written as a sum of positive squares in 2 ways, for example, as 343805764 + 1087416576 = 18542^2 + 32976^2 .

It is a super-3 number, since 3×1431222340³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1431222341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35780539 + ... + 35780578.

It is an arithmetic number, because the mean of its divisors is an integer number (250463913).

Almost surely, 2^1431222340 is an apocalyptic number.

1431222340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1431222340 is an abundant number, since it is smaller than the sum of its proper divisors (1574344616).

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

1431222340 is a wasteful number, since it uses less digits than its factorization.

1431222340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71561126 (or 71561124 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1431222340 is about 37831.4993094379. The cubic root of 1431222340 is about 1126.9440861072.

Adding to 1431222340 its reverse (432221341), we get a palindrome (1863443681).

Subtracting from 1431222340 its reverse (432221341), we obtain a palindrome (999000999).

The spelling of 1431222340 in words is "one billion, four hundred thirty-one million, two hundred twenty-two thousand, three hundred forty".