20313323 has 4 divisors (see below), whose sum is σ = 20415600. Its totient is φ = 20211048.

The previous prime is 20313281. The next prime is 20313343. The reversal of 20313323 is 32331302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20313323 - 2⁸ = 20313067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20313343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50840 + ... + 51237.

It is an arithmetic number, because the mean of its divisors is an integer number (5103900).

Almost surely, 2^20313323 is an apocalyptic number.

20313323 is a deficient number, since it is larger than the sum of its proper divisors (102277).

20313323 is a wasteful number, since it uses less digits than its factorization.

20313323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102276.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 20313323 is about 4507.0303970575. The cubic root of 20313323 is about 272.8519057056.

Adding to 20313323 its reverse (32331302), we get a palindrome (52644625).

The spelling of 20313323 in words is "twenty million, three hundred thirteen thousand, three hundred twenty-three".