1323010021 has 8 divisors (see below), whose sum is σ = 1326862944. Its totient is φ = 1319164080.

The previous prime is 1323009983. The next prime is 1323010037. The reversal of 1323010021 is 1200103231.

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 1323010021 - 2²⁵ = 1289455589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323009983 and 1323010010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323010081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 819411 + ... + 821023.

It is an arithmetic number, because the mean of its divisors is an integer number (165857868).

Almost surely, 2^1323010021 is an apocalyptic number.

It is an amenable number.

1323010021 is a deficient number, since it is larger than the sum of its proper divisors (3852923).

1323010021 is a wasteful number, since it uses less digits than its factorization.

1323010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1323010021 is about 36373.2047117105. The cubic root of 1323010021 is about 1097.7944847234.

Adding to 1323010021 its reverse (1200103231), we get a palindrome (2523113252).

The spelling of 1323010021 in words is "one billion, three hundred twenty-three million, ten thousand, twenty-one".