1421165311 has 2 divisors, whose sum is σ = 1421165312. Its totient is φ = 1421165310.

The previous prime is 1421165299. The next prime is 1421165357. The reversal of 1421165311 is 1135611241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1421165311 - 2⁹ = 1421164799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421165611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710582655 + 710582656.

It is an arithmetic number, because the mean of its divisors is an integer number (710582656).

Almost surely, 2^1421165311 is an apocalyptic number.

1421165311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421165311 is an equidigital number, since it uses as much as digits as its factorization.

1421165311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 25.

The square root of 1421165311 is about 37698.3462634636. The cubic root of 1421165311 is about 1124.2982450813.

Adding to 1421165311 its reverse (1135611241), we get a palindrome (2556776552).

The spelling of 1421165311 in words is "one billion, four hundred twenty-one million, one hundred sixty-five thousand, three hundred eleven".