23312542 has 32 divisors (see below), whose sum is σ = 40932864. Its totient is φ = 9840000.

The previous prime is 23312539. The next prime is 23312543. The reversal of 23312542 is 24521332.

It is a super-2 number, since 2×23312542² = 1086949229003528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23312543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30667 + ... + 31417.

It is an arithmetic number, because the mean of its divisors is an integer number (1279152).

Almost surely, 2^23312542 is an apocalyptic number.

23312542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

23312542 is a deficient number, since it is larger than the sum of its proper divisors (17620322).

23312542 is a wasteful number, since it uses less digits than its factorization.

23312542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864.

The product of its digits is 1440, while the sum is 22.

The square root of 23312542 is about 4828.3063283102. The cubic root of 23312542 is about 285.6690631521.

Adding to 23312542 its reverse (24521332), we get a palindrome (47833874).

The spelling of 23312542 in words is "twenty-three million, three hundred twelve thousand, five hundred forty-two".