1421531323 has 2 divisors, whose sum is σ = 1421531324. Its totient is φ = 1421531322.

The previous prime is 1421531311. The next prime is 1421531327. The reversal of 1421531323 is 3231351241.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1421531323 - 2⁵ = 1421531291 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421531327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710765661 + 710765662.

It is an arithmetic number, because the mean of its divisors is an integer number (710765662).

Almost surely, 2^1421531323 is an apocalyptic number.

1421531323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421531323 is an equidigital number, since it uses as much as digits as its factorization.

1421531323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 25.

The square root of 1421531323 is about 37703.2004344459. The cubic root of 1421531323 is about 1124.3947553944.

Adding to 1421531323 its reverse (3231351241), we get a palindrome (4652882564).

The spelling of 1421531323 in words is "one billion, four hundred twenty-one million, five hundred thirty-one thousand, three hundred twenty-three".