1431120505 has 4 divisors (see below), whose sum is σ = 1717344612. Its totient is φ = 1144896400.

The previous prime is 1431120491. The next prime is 1431120533. The reversal of 1431120505 is 5050211341.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5050211341 = 7 ⋅721458763.

It can be written as a sum of positive squares in 2 ways, for example, as 333391081 + 1097729424 = 18259^2 + 33132^2 .

It is not a de Polignac number, because 1431120505 - 2¹³ = 1431112313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143112046 + ... + 143112055.

It is an arithmetic number, because the mean of its divisors is an integer number (429336153).

Almost surely, 2^1431120505 is an apocalyptic number.

It is an amenable number.

1431120505 is a deficient number, since it is larger than the sum of its proper divisors (286224107).

1431120505 is an equidigital number, since it uses as much as digits as its factorization.

1431120505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286224106.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1431120505 is about 37830.1533832471. The cubic root of 1431120505 is about 1126.9173571894.

Adding to 1431120505 its reverse (5050211341), we get a palindrome (6481331846).

The spelling of 1431120505 in words is "one billion, four hundred thirty-one million, one hundred twenty thousand, five hundred five".