1431143231 has 8 divisors (see below), whose sum is σ = 1636360320. Its totient is φ = 1226118168.

The previous prime is 1431143227. The next prime is 1431143257. The reversal of 1431143231 is 1323411341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1431143231 - 2² = 1431143227 is a prime.

It is a super-2 number, since 2×1431143231² = 4096341895274238722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1431143197 and 1431143206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431143201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31661 + ... + 62166.

It is an arithmetic number, because the mean of its divisors is an integer number (204545040).

Almost surely, 2^1431143231 is an apocalyptic number.

1431143231 is a deficient number, since it is larger than the sum of its proper divisors (205217089).

1431143231 is an equidigital number, since it uses as much as digits as its factorization.

1431143231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96013.

The product of its digits is 864, while the sum is 23.

The square root of 1431143231 is about 37830.4537509134. The cubic root of 1431143231 is about 1126.9233222562.

Adding to 1431143231 its reverse (1323411341), we get a palindrome (2754554572).

The spelling of 1431143231 in words is "one billion, four hundred thirty-one million, one hundred forty-three thousand, two hundred thirty-one".