20310434 has 8 divisors (see below), whose sum is σ = 30490668. Its totient is φ = 10146880.

The previous prime is 20310401. The next prime is 20310463. The reversal of 20310434 is 43401302.

It can be written as a sum of positive squares in 2 ways, for example, as 17430625 + 2879809 = 4175^2 + 1697^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 467 + ... + 6390.

Almost surely, 2^20310434 is an apocalyptic number.

20310434 is a deficient number, since it is larger than the sum of its proper divisors (10180234).

20310434 is a wasteful number, since it uses less digits than its factorization.

20310434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8340.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20310434 is about 4506.7098863805. The cubic root of 20310434 is about 272.8389699175.

Adding to 20310434 its reverse (43401302), we get a palindrome (63711736).

The spelling of 20310434 in words is "twenty million, three hundred ten thousand, four hundred thirty-four".