201131031 has 8 divisors (see below), whose sum is σ = 269172720. Its totient is φ = 133588352.

The previous prime is 201130999. The next prime is 201131053. The reversal of 201131031 is 130131102.

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 201131031 - 2⁵ = 201130999 is a prime.

It is a super-2 number, since 2×201131031² = 80907383262245922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201130998 and 201131016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201132031) 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, 123810 + ... + 125423.

It is an arithmetic number, because the mean of its divisors is an integer number (33646590).

Almost surely, 2^201131031 is an apocalyptic number.

201131031 is a deficient number, since it is larger than the sum of its proper divisors (68041689).

201131031 is a wasteful number, since it uses less digits than its factorization.

201131031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249505.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 201131031 is about 14182.0672329530. The cubic root of 201131031 is about 585.9038609964.

Adding to 201131031 its reverse (130131102), we get a palindrome (331262133).

The spelling of 201131031 in words is "two hundred one million, one hundred thirty-one thousand, thirty-one".