23140403 has 24 divisors (see below), whose sum is σ = 28064064. Its totient is φ = 18944640.

The previous prime is 23140399. The next prime is 23140409. The reversal of 23140403 is 30404132.

It is not a de Polignac number, because 23140403 - 2² = 23140399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23140409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73775 + ... + 74087.

It is an arithmetic number, because the mean of its divisors is an integer number (1169336).

Almost surely, 2^23140403 is an apocalyptic number.

23140403 is a deficient number, since it is larger than the sum of its proper divisors (4923661).

23140403 is a wasteful number, since it uses less digits than its factorization.

23140403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 23140403 is about 4810.4472765014. The cubic root of 23140403 is about 284.9642019262.

Adding to 23140403 its reverse (30404132), we get a palindrome (53544535).

The spelling of 23140403 in words is "twenty-three million, one hundred forty thousand, four hundred three".