20006131 has 8 divisors (see below), whose sum is σ = 20296640. Its totient is φ = 19717992.

The previous prime is 20006123. The next prime is 20006149. The reversal of 20006131 is 13160002.

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

It is a cyclic number.

It is not a de Polignac number, because 20006131 - 2³ = 20006123 is a prime.

It is a super-2 number, since 2×20006131² = 800490555178322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20006101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22216 + ... + 23098.

It is an arithmetic number, because the mean of its divisors is an integer number (2537080).

Almost surely, 2^20006131 is an apocalyptic number.

20006131 is a deficient number, since it is larger than the sum of its proper divisors (290509).

20006131 is a wasteful number, since it uses less digits than its factorization.

20006131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 20006131 is about 4472.8213691137. The cubic root of 20006131 is about 271.4694956497.

Adding to 20006131 its reverse (13160002), we get a palindrome (33166133).

The spelling of 20006131 in words is "twenty million, six thousand, one hundred thirty-one".