23453145 has 48 divisors (see below), whose sum is σ = 42806400. Its totient is φ = 12317184.

The previous prime is 23453137. The next prime is 23453147. The reversal of 23453145 is 54135432.

23453145 is a `hidden beast` number, since 2 + 345 + 314 + 5 = 666.

It is not a de Polignac number, because 23453145 - 2³ = 23453137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (23453147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 117756 + ... + 117954.

It is an arithmetic number, because the mean of its divisors is an integer number (891800).

Almost surely, 2^23453145 is an apocalyptic number.

It is an amenable number.

23453145 is a deficient number, since it is larger than the sum of its proper divisors (19353255).

23453145 is an equidigital number, since it uses as much as digits as its factorization.

23453145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 304 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 23453145 is about 4842.8447218551. The cubic root of 23453145 is about 286.2422231127.

Adding to 23453145 its reverse (54135432), we get a palindrome (77588577).

The spelling of 23453145 in words is "twenty-three million, four hundred fifty-three thousand, one hundred forty-five".