201130031 has 4 divisors (see below), whose sum is σ = 202411272. Its totient is φ = 199848792.

The previous prime is 201130003. The next prime is 201130073. The reversal of 201130031 is 130031102.

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 201130031 - 2²² = 196935727 is a prime.

It is a super-2 number, since 2×201130031² = 80906578740121922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201129994 and 201130021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201130001) 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, 640385 + ... + 640698.

It is an arithmetic number, because the mean of its divisors is an integer number (50602818).

Almost surely, 2^201130031 is an apocalyptic number.

201130031 is a deficient number, since it is larger than the sum of its proper divisors (1281241).

201130031 is a wasteful number, since it uses less digits than its factorization.

201130031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281240.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 201130031 is about 14182.0319771181. The cubic root of 201130031 is about 585.9028899796.

Adding to 201130031 its reverse (130031102), we get a palindrome (331161133).

The spelling of 201130031 in words is "two hundred one million, one hundred thirty thousand, thirty-one".