23147212 has 12 divisors (see below), whose sum is σ = 44190216. Its totient is φ = 10521440.

The previous prime is 23147197. The next prime is 23147221. The reversal of 23147212 is 21274132.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262993 + ... + 263080.

It is an arithmetic number, because the mean of its divisors is an integer number (3682518).

Almost surely, 2^23147212 is an apocalyptic number.

23147212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23147212 is a deficient number, since it is larger than the sum of its proper divisors (21043004).

23147212 is a wasteful number, since it uses less digits than its factorization.

23147212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526088 (or 526086 counting only the distinct ones).

The product of its digits is 672, while the sum is 22.

The square root of 23147212 is about 4811.1549548939. The cubic root of 23147212 is about 284.9921491630.

Subtracting from 23147212 its reverse (21274132), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 23147212 in words is "twenty-three million, one hundred forty-seven thousand, two hundred twelve".