23219451 has 6 divisors (see below), whose sum is σ = 33539220. Its totient is φ = 15479628.

The previous prime is 23219437. The next prime is 23219473. The reversal of 23219451 is 15491232.

It is not a de Polignac number, because 23219451 - 2⁵ = 23219419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23219411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1289961 + ... + 1289978.

It is an arithmetic number, because the mean of its divisors is an integer number (5589870).

Almost surely, 2^23219451 is an apocalyptic number.

23219451 is a deficient number, since it is larger than the sum of its proper divisors (10319769).

23219451 is a wasteful number, since it uses less digits than its factorization.

23219451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2579945 (or 2579942 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 23219451 is about 4818.6565555142. The cubic root of 23219451 is about 285.2883139600.

It can be divided in two parts, 232 and 19451, that added together give a 9-th power (19683 = 3⁹).

The spelling of 23219451 in words is "twenty-three million, two hundred nineteen thousand, four hundred fifty-one".