20131039 has 4 divisors (see below), whose sum is σ = 20232400. Its totient is φ = 20029680.

The previous prime is 20131031. The next prime is 20131061. The reversal of 20131039 is 93013102.

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 20131039 - 2³ = 20131031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131031) 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, 50382 + ... + 50779.

It is an arithmetic number, because the mean of its divisors is an integer number (5058100).

Almost surely, 2^20131039 is an apocalyptic number.

20131039 is a deficient number, since it is larger than the sum of its proper divisors (101361).

20131039 is a wasteful number, since it uses less digits than its factorization.

20131039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101360.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 20131039 is about 4486.7626413707. The cubic root of 20131039 is about 272.0332959168.

The spelling of 20131039 in words is "twenty million, one hundred thirty-one thousand, thirty-nine".