23481643 has 16 divisors (see below), whose sum is σ = 25816896. Its totient is φ = 21288960.

The previous prime is 23481637. The next prime is 23481649. The reversal of 23481643 is 34618432.

It is an interprime number because it is at equal distance from previous prime (23481637) and next prime (23481649).

It is a cyclic number.

It is not a de Polignac number, because 23481643 - 2⁵ = 23481611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23481649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34555 + ... + 35227.

It is an arithmetic number, because the mean of its divisors is an integer number (1613556).

Almost surely, 2^23481643 is an apocalyptic number.

23481643 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

23481643 is a deficient number, since it is larger than the sum of its proper divisors (2335253).

23481643 is a wasteful number, since it uses less digits than its factorization.

23481643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774.

The product of its digits is 13824, while the sum is 31.

The square root of 23481643 is about 4845.7861075371. The cubic root of 23481643 is about 286.3581141670.

The spelling of 23481643 in words is "twenty-three million, four hundred eighty-one thousand, six hundred forty-three".