1431134321 has 12 divisors (see below), whose sum is σ = 1512303300. Its totient is φ = 1354123008.

The previous prime is 1431134281. The next prime is 1431134323. The reversal of 1431134321 is 1234311341.

It can be written as a sum of positive squares in 2 ways, for example, as 312900721 + 1118233600 = 17689^2 + 33440^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1431134321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1431134323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 362285 + ... + 366213.

It is an arithmetic number, because the mean of its divisors is an integer number (126025275).

Almost surely, 2^1431134321 is an apocalyptic number.

It is an amenable number.

1431134321 is a deficient number, since it is larger than the sum of its proper divisors (81168979).

1431134321 is a wasteful number, since it uses less digits than its factorization.

1431134321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4976 (or 4957 counting only the distinct ones).

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

The square root of 1431134321 is about 37830.3359884630. The cubic root of 1431134321 is about 1126.9209835880.

Adding to 1431134321 its reverse (1234311341), we get a palindrome (2665445662).

The spelling of 1431134321 in words is "one billion, four hundred thirty-one million, one hundred thirty-four thousand, three hundred twenty-one".