23011403 has 4 divisors (see below), whose sum is σ = 23107128. Its totient is φ = 22915680.

The previous prime is 23011397. The next prime is 23011427. The reversal of 23011403 is 30411032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23011403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23011463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47501 + ... + 47982.

It is an arithmetic number, because the mean of its divisors is an integer number (5776782).

Almost surely, 2^23011403 is an apocalyptic number.

23011403 is a deficient number, since it is larger than the sum of its proper divisors (95725).

23011403 is an equidigital number, since it uses as much as digits as its factorization.

23011403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95724.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 23011403 is about 4797.0202209288. The cubic root of 23011403 is about 284.4336882134.

Adding to 23011403 its reverse (30411032), we get a palindrome (53422435).

The spelling of 23011403 in words is "twenty-three million, eleven thousand, four hundred three".