23821403 has 12 divisors (see below), whose sum is σ = 25530120. Its totient is φ = 22221312.

The previous prime is 23821397. The next prime is 23821409. The reversal of 23821403 is 30412832.

It is an interprime number because it is at equal distance from previous prime (23821397) and next prime (23821409).

It is not a de Polignac number, because 23821403 - 2²² = 19627099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23821409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39875 + ... + 40467.

It is an arithmetic number, because the mean of its divisors is an integer number (2127510).

Almost surely, 2^23821403 is an apocalyptic number.

23821403 is a deficient number, since it is larger than the sum of its proper divisors (1708717).

23821403 is a wasteful number, since it uses less digits than its factorization.

23821403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766 (or 749 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 23821403 is about 4880.7174677500. The cubic root of 23821403 is about 287.7326278517.

The spelling of 23821403 in words is "twenty-three million, eight hundred twenty-one thousand, four hundred three".