20313129 has 8 divisors (see below), whose sum is σ = 27109312. Its totient is φ = 13529520.

The previous prime is 20313121. The next prime is 20313133. The reversal of 20313129 is 92131302.

It is a happy number.

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

It is not a de Polignac number, because 20313129 - 2³ = 20313121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20313121) 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 7 ways as a sum of consecutive naturals, for example, 1692 + ... + 6594.

It is an arithmetic number, because the mean of its divisors is an integer number (3388664).

Almost surely, 2^20313129 is an apocalyptic number.

It is an amenable number.

20313129 is a deficient number, since it is larger than the sum of its proper divisors (6796183).

20313129 is a wasteful number, since it uses less digits than its factorization.

20313129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6287.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 20313129 is about 4507.0088750745. The cubic root of 20313129 is about 272.8510370895.

The spelling of 20313129 in words is "twenty million, three hundred thirteen thousand, one hundred twenty-nine".