23103021 has 16 divisors (see below), whose sum is σ = 31286528. Its totient is φ = 15163200.

The previous prime is 23103019. The next prime is 23103037. The reversal of 23103021 is 12030132.

Added to its reverse (12030132) it gives a triangular number (35133153 = T₈₃₈₂).

It is a happy number.

It is not a de Polignac number, because 23103021 - 2¹ = 23103019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23102988 and 23103006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23103061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85116 + ... + 85386.

It is an arithmetic number, because the mean of its divisors is an integer number (1955408).

Almost surely, 2^23103021 is an apocalyptic number.

It is an amenable number.

23103021 is a deficient number, since it is larger than the sum of its proper divisors (8183507).

23103021 is a wasteful number, since it uses less digits than its factorization.

23103021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612.

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

The square root of 23103021 is about 4806.5602045538. The cubic root of 23103021 is about 284.8106714232.

Adding to 23103021 its reverse (12030132), we get a palindrome (35133153).

The spelling of 23103021 in words is "twenty-three million, one hundred three thousand, twenty-one".