1431113521 has 8 divisors (see below), whose sum is σ = 1494523584. Its totient is φ = 1367802480.

The previous prime is 1431113513. The next prime is 1431113549. The reversal of 1431113521 is 1253111341.

It is a happy number.

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 1431113521 - 2³ = 1431113513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1431113492 and 1431113501.

It is not an unprimeable number, because it can be changed into a prime (1431110521) 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, 5595 + ... + 53791.

It is an arithmetic number, because the mean of its divisors is an integer number (186815448).

Almost surely, 2^1431113521 is an apocalyptic number.

It is an amenable number.

1431113521 is a deficient number, since it is larger than the sum of its proper divisors (63410063).

1431113521 is a wasteful number, since it uses less digits than its factorization.

1431113521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49511.

The product of its digits is 360, while the sum is 22.

The square root of 1431113521 is about 37830.0610758164. The cubic root of 1431113521 is about 1126.9155240329.

Adding to 1431113521 its reverse (1253111341), we get a palindrome (2684224862).

The spelling of 1431113521 in words is "one billion, four hundred thirty-one million, one hundred thirteen thousand, five hundred twenty-one".