1421431211 has 16 divisors (see below), whose sum is σ = 1586922240. Its totient is φ = 1266930720.

The previous prime is 1421431171. The next prime is 1421431223. The reversal of 1421431211 is 1121341241.

It is a cyclic number.

It is not a de Polignac number, because 1421431211 - 2¹⁰ = 1421430187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421431241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5 + ... + 53318.

It is an arithmetic number, because the mean of its divisors is an integer number (99182640).

Almost surely, 2^1421431211 is an apocalyptic number.

1421431211 is a deficient number, since it is larger than the sum of its proper divisors (165491029).

1421431211 is a wasteful number, since it uses less digits than its factorization.

1421431211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53426.

The product of its digits is 192, while the sum is 20.

The square root of 1421431211 is about 37701.8727784178. The cubic root of 1421431211 is about 1124.3683594348.

Adding to 1421431211 its reverse (1121341241), we get a palindrome (2542772452).

The spelling of 1421431211 in words is "one billion, four hundred twenty-one million, four hundred thirty-one thousand, two hundred eleven".