20313423 has 40 divisors (see below), whose sum is σ = 33175296. Its totient is φ = 12312000.

The previous prime is 20313421. The next prime is 20313437. The reversal of 20313423 is 32431302.

It is not a de Polignac number, because 20313423 - 2¹ = 20313421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20313396 and 20313405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313421) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 106258 + ... + 106448.

Almost surely, 2^20313423 is an apocalyptic number.

20313423 is a deficient number, since it is larger than the sum of its proper divisors (12861873).

20313423 is a wasteful number, since it uses less digits than its factorization.

20313423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 20313423 is about 4507.0414908230. The cubic root of 20313423 is about 272.8523534437.

Adding to 20313423 its reverse (32431302), we get a palindrome (52744725).

It can be divided in two parts, 20313 and 423, that added together give a 4-th power (20736 = 12⁴).

The spelling of 20313423 in words is "twenty million, three hundred thirteen thousand, four hundred twenty-three".