20313404 has 6 divisors (see below), whose sum is σ = 35548464. Its totient is φ = 10156700.

The previous prime is 20313389. The next prime is 20313421. The reversal of 20313404 is 40431302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2539172 + ... + 2539179.

It is an arithmetic number, because the mean of its divisors is an integer number (5924744).

Almost surely, 2^20313404 is an apocalyptic number.

It is an amenable number.

20313404 is a deficient number, since it is larger than the sum of its proper divisors (15235060).

20313404 is a wasteful number, since it uses less digits than its factorization.

20313404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5078355 (or 5078353 counting only the distinct ones).

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

The square root of 20313404 is about 4507.0393830096. The cubic root of 20313404 is about 272.8522683736.

Adding to 20313404 its reverse (40431302), we get a palindrome (60744706).

The spelling of 20313404 in words is "twenty million, three hundred thirteen thousand, four hundred four".