23213455 has 8 divisors (see below), whose sum is σ = 28044000. Its totient is φ = 18445536.

The previous prime is 23213447. The next prime is 23213473. The reversal of 23213455 is 55431232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23213455 - 2³ = 23213447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14835 + ... + 16324.

It is an arithmetic number, because the mean of its divisors is an integer number (3505500).

Almost surely, 2^23213455 is an apocalyptic number.

23213455 is a deficient number, since it is larger than the sum of its proper divisors (4830545).

23213455 is a wasteful number, since it uses less digits than its factorization.

23213455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31313.

The product of its digits is 3600, while the sum is 25.

The square root of 23213455 is about 4818.0343502304. The cubic root of 23213455 is about 285.2637550102.

Adding to 23213455 its reverse (55431232), we get a palindrome (78644687).

It can be divided in two parts, 2321 and 3455, that added together give a square (5776 = 76²).

The spelling of 23213455 in words is "twenty-three million, two hundred thirteen thousand, four hundred fifty-five".