23031646 has 16 divisors (see below), whose sum is σ = 38207088. Its totient is φ = 10324800.

The previous prime is 23031641. The next prime is 23031661. The reversal of 23031646 is 64613032.

It is a self number, because there is not a number n which added to its sum of digits gives 23031646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23031641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5565 + ... + 8776.

It is an arithmetic number, because the mean of its divisors is an integer number (2387943).

Almost surely, 2^23031646 is an apocalyptic number.

23031646 is a deficient number, since it is larger than the sum of its proper divisors (15175442).

23031646 is a wasteful number, since it uses less digits than its factorization.

23031646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14427.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 23031646 is about 4799.1297127708. The cubic root of 23031646 is about 284.5170686662.

Adding to 23031646 its reverse (64613032), we get a palindrome (87644678).

The spelling of 23031646 in words is "twenty-three million, thirty-one thousand, six hundred forty-six".