23031644 has 12 divisors (see below), whose sum is σ = 40341000. Its totient is φ = 11505648.

The previous prime is 23031641. The next prime is 23031661. The reversal of 23031644 is 44613032.

It is a happy number.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5102 + ... + 8490.

It is an arithmetic number, because the mean of its divisors is an integer number (3361750).

Almost surely, 2^23031644 is an apocalyptic number.

It is an amenable number.

23031644 is a deficient number, since it is larger than the sum of its proper divisors (17309356).

23031644 is a wasteful number, since it uses less digits than its factorization.

23031644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5092 (or 5090 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 23031644 is about 4799.1295043997. The cubic root of 23031644 is about 284.5170604307.

Adding to 23031644 its reverse (44613032), we get a palindrome (67644676).

The spelling of 23031644 in words is "twenty-three million, thirty-one thousand, six hundred forty-four".