20313099 has 24 divisors (see below), whose sum is σ = 30663360. Its totient is φ = 13437576.

The previous prime is 20313089. The next prime is 20313119. The reversal of 20313099 is 99031302.

It is not a de Polignac number, because 20313099 - 2⁵ = 20313067 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20313089) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 43264 + ... + 43730.

It is an arithmetic number, because the mean of its divisors is an integer number (1277640).

Almost surely, 2^20313099 is an apocalyptic number.

20313099 is a deficient number, since it is larger than the sum of its proper divisors (10350261).

20313099 is an equidigital number, since it uses as much as digits as its factorization.

20313099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 20313099 is about 4507.0055469236. The cubic root of 20313099 is about 272.8509027670.

The spelling of 20313099 in words is "twenty million, three hundred thirteen thousand, ninety-nine".