23013405 has 12 divisors (see below), whose sum is σ = 39889980. Its totient is φ = 12273792.

The previous prime is 23013383. The next prime is 23013433. The reversal of 23013405 is 50431032.

It can be written as a sum of positive squares in 2 ways, for example, as 13704804 + 9308601 = 3702^2 + 3051^2 .

It is not a de Polignac number, because 23013405 - 2⁵ = 23013373 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 11 ways as a sum of consecutive naturals, for example, 255660 + ... + 255749.

It is an arithmetic number, because the mean of its divisors is an integer number (3324165).

Almost surely, 2^23013405 is an apocalyptic number.

It is an amenable number.

23013405 is a deficient number, since it is larger than the sum of its proper divisors (16876575).

23013405 is a wasteful number, since it uses less digits than its factorization.

23013405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511420 (or 511417 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 23013405 is about 4797.2288875975. The cubic root of 23013405 is about 284.4419365838.

Adding to 23013405 its reverse (50431032), we get a palindrome (73444437).

The spelling of 23013405 in words is "twenty-three million, thirteen thousand, four hundred five".