1431121141 has 4 divisors (see below), whose sum is σ = 1464403072. Its totient is φ = 1397839212.

The previous prime is 1431121129. The next prime is 1431121163. The reversal of 1431121141 is 1411211341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1431121141 - 2¹¹ = 1431119093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431125141) 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 3 ways as a sum of consecutive naturals, for example, 16640901 + ... + 16640986.

It is an arithmetic number, because the mean of its divisors is an integer number (366100768).

Almost surely, 2^1431121141 is an apocalyptic number.

It is an amenable number.

1431121141 is a deficient number, since it is larger than the sum of its proper divisors (33281931).

1431121141 is an equidigital number, since it uses as much as digits as its factorization.

1431121141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33281930.

The product of its digits is 96, while the sum is 19.

The square root of 1431121141 is about 37830.1617892390. The cubic root of 1431121141 is about 1126.9175241260.

Adding to 1431121141 its reverse (1411211341), we get a palindrome (2842332482).

The spelling of 1431121141 in words is "one billion, four hundred thirty-one million, one hundred twenty-one thousand, one hundred forty-one".