1023321421 has 8 divisors (see below), whose sum is σ = 1047087000. Its totient is φ = 999781440.

The previous prime is 1023321389. The next prime is 1023321433. The reversal of 1023321421 is 1241233201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4818025 + 1018503396 = 2195^2 + 31914^2 .

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 1023321421 - 2⁵ = 1023321389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023321121) 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, 47206 + ... + 65383.

It is an arithmetic number, because the mean of its divisors is an integer number (130885875).

Almost surely, 2^1023321421 is an apocalyptic number.

It is an amenable number.

1023321421 is a deficient number, since it is larger than the sum of its proper divisors (23765579).

1023321421 is a wasteful number, since it uses less digits than its factorization.

1023321421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112799.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1023321421 is about 31989.3954459912. The cubic root of 1023321421 is about 1007.7141459346.

Adding to 1023321421 its reverse (1241233201), we get a palindrome (2264554622).

The spelling of 1023321421 in words is "one billion, twenty-three million, three hundred twenty-one thousand, four hundred twenty-one".