13023021 has 8 divisors (see below), whose sum is σ = 18942624. Its totient is φ = 7892720.

The previous prime is 13023013. The next prime is 13023029. The reversal of 13023021 is 12032031.

It is a happy number.

13023021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13023013) and next prime (13023029).

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

It is not a de Polignac number, because 13023021 - 2³ = 13023013 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13022988 and 13023006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13023029) 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, 197286 + ... + 197351.

It is an arithmetic number, because the mean of its divisors is an integer number (2367828).

Almost surely, 2^13023021 is an apocalyptic number.

13023021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13023021 is a deficient number, since it is larger than the sum of its proper divisors (5919603).

13023021 is a wasteful number, since it uses less digits than its factorization.

13023021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394651.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 13023021 is about 3608.7423016891. The cubic root of 13023021 is about 235.2721819906.

Adding to 13023021 its reverse (12032031), we get a palindrome (25055052).

The spelling of 13023021 in words is "thirteen million, twenty-three thousand, twenty-one".