1421623311 has 8 divisors (see below), whose sum is σ = 1900664064. Its totient is φ = 945165720.

The previous prime is 1421623289. The next prime is 1421623319. The reversal of 1421623311 is 1133261241.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1421623311 - 2⁵ = 1421623279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421623319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644505 + ... + 646706.

It is an arithmetic number, because the mean of its divisors is an integer number (237583008).

Almost surely, 2^1421623311 is an apocalyptic number.

1421623311 is a deficient number, since it is larger than the sum of its proper divisors (479040753).

1421623311 is a wasteful number, since it uses less digits than its factorization.

1421623311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291581.

The product of its digits is 864, while the sum is 24.

The square root of 1421623311 is about 37704.4203111518. The cubic root of 1421623311 is about 1124.4190082529.

Adding to 1421623311 its reverse (1133261241), we get a palindrome (2554884552).

The spelling of 1421623311 in words is "one billion, four hundred twenty-one million, six hundred twenty-three thousand, three hundred eleven".