23381516 has 12 divisors (see below), whose sum is σ = 41217288. Its totient is φ = 11605152.

The previous prime is 23381497. The next prime is 23381537. The reversal of 23381516 is 61518332.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20786 + ... + 21881.

It is an arithmetic number, because the mean of its divisors is an integer number (3434774).

Almost surely, 2^23381516 is an apocalyptic number.

It is an amenable number.

23381516 is a deficient number, since it is larger than the sum of its proper divisors (17835772).

23381516 is a wasteful number, since it uses less digits than its factorization.

23381516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42808 (or 42806 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 23381516 is about 4835.4437231758. The cubic root of 23381516 is about 285.9505187678.

Adding to 23381516 its reverse (61518332), we get a palindrome (84899848).

The spelling of 23381516 in words is "twenty-three million, three hundred eighty-one thousand, five hundred sixteen".