1423310021 has 8 divisors (see below), whose sum is σ = 1627202304. Its totient is φ = 1219558320.

The previous prime is 1423310017. The next prime is 1423310047. The reversal of 1423310021 is 1200133241.

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

It is a cyclic number.

It is not a de Polignac number, because 1423310021 - 2² = 1423310017 is a prime.

It is a super-2 number, since 2×1423310021² = 4051622831758040882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423310051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12470 + ... + 54791.

It is an arithmetic number, because the mean of its divisors is an integer number (203400288).

Almost surely, 2^1423310021 is an apocalyptic number.

It is an amenable number.

1423310021 is a deficient number, since it is larger than the sum of its proper divisors (203892283).

1423310021 is an equidigital number, since it uses as much as digits as its factorization.

1423310021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70291.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1423310021 is about 37726.7812170612. The cubic root of 1423310021 is about 1124.8635280710.

Adding to 1423310021 its reverse (1200133241), we get a palindrome (2623443262).

The spelling of 1423310021 in words is "one billion, four hundred twenty-three million, three hundred ten thousand, twenty-one".