1431331243 has 8 divisors (see below), whose sum is σ = 1457841600. Its totient is φ = 1405030848.

The previous prime is 1431331229. The next prime is 1431331247. The reversal of 1431331243 is 3421331341.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1431331243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1431331247) 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, 38698 + ... + 66031.

It is an arithmetic number, because the mean of its divisors is an integer number (182230200).

Almost surely, 2^1431331243 is an apocalyptic number.

1431331243 is a deficient number, since it is larger than the sum of its proper divisors (26510357).

1431331243 is a wasteful number, since it uses less digits than its factorization.

1431331243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104981.

The product of its digits is 2592, while the sum is 25.

The square root of 1431331243 is about 37832.9385985281. The cubic root of 1431331243 is about 1126.9726687800.

Adding to 1431331243 its reverse (3421331341), we get a palindrome (4852662584).

The spelling of 1431331243 in words is "one billion, four hundred thirty-one million, three hundred thirty-one thousand, two hundred forty-three".