23171542 has 16 divisors (see below), whose sum is σ = 35640000. Its totient is φ = 11294920.

The previous prime is 23171537. The next prime is 23171549. The reversal of 23171542 is 24517132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23171549) 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, 14709 + ... + 16207.

It is an arithmetic number, because the mean of its divisors is an integer number (2227500).

Almost surely, 2^23171542 is an apocalyptic number.

23171542 is a deficient number, since it is larger than the sum of its proper divisors (12468458).

23171542 is a wasteful number, since it uses less digits than its factorization.

23171542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691.

The product of its digits is 1680, while the sum is 25.

The square root of 23171542 is about 4813.6827897152. The cubic root of 23171542 is about 285.0919658064.

Adding to 23171542 its reverse (24517132), we get a palindrome (47688674).

The spelling of 23171542 in words is "twenty-three million, one hundred seventy-one thousand, five hundred forty-two".