23203489 has 3 divisors (see below), whose sum is σ = 23208307. Its totient is φ = 23198672.

The previous prime is 23203483. The next prime is 23203493. The reversal of 23203489 is 98430232.

The square root of 23203489 is 4817.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 2117025 + 21086464 = 1455^2 + 4592^2 .

It is not a de Polignac number, because 23203489 - 2¹³ = 23195297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23203489.

It is not an unprimeable number, because it can be changed into a prime (23203483) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2409 + ... + 7225.

Almost surely, 2^23203489 is an apocalyptic number.

23203489 is the 4817-th square number.

23203489 is the 2409-th centered octagonal number.

It is an amenable number.

23203489 is a deficient number, since it is larger than the sum of its proper divisors (4818).

23203489 is an frugal number, since it uses more digits than its factorization.

23203489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9634 (or 4817 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The cubic root of 23203489 is about 285.2229260237. Note that the first 3 decimals are identical.

The spelling of 23203489 in words is "twenty-three million, two hundred three thousand, four hundred eighty-nine".