20313430 has 16 divisors (see below), whose sum is σ = 36714384. Its totient is φ = 8092000.

The previous prime is 20313421. The next prime is 20313437. The reversal of 20313430 is 3431302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1537 + ... + 6556.

It is an arithmetic number, because the mean of its divisors is an integer number (2294649).

Almost surely, 2^20313430 is an apocalyptic number.

20313430 is a deficient number, since it is larger than the sum of its proper divisors (16400954).

20313430 is a wasteful number, since it uses less digits than its factorization.

20313430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8351.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 20313430 is about 4507.0422673856. The cubic root of 20313430 is about 272.8523847853.

Adding to 20313430 its reverse (3431302), we get a palindrome (23744732).

The spelling of 20313430 in words is "twenty million, three hundred thirteen thousand, four hundred thirty".