201241031 has 4 divisors (see below), whose sum is σ = 201280632. Its totient is φ = 201201432.

The previous prime is 201241009. The next prime is 201241037. The reversal of 201241031 is 130142102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130142102 = 2 ⋅65071051.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201241031 is a prime.

It is a super-2 number, since 2×201241031² = 80995905115885922, 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 = 201240997 and 201241015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201241037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10820 + ... + 22793.

It is an arithmetic number, because the mean of its divisors is an integer number (50320158).

Almost surely, 2^201241031 is an apocalyptic number.

201241031 is a deficient number, since it is larger than the sum of its proper divisors (39601).

201241031 is an equidigital number, since it uses as much as digits as its factorization.

201241031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39600.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 201241031 is about 14185.9448398758. The cubic root of 201241031 is about 586.0106532016.

Adding to 201241031 its reverse (130142102), we get a palindrome (331383133).

The spelling of 201241031 in words is "two hundred one million, two hundred forty-one thousand, thirty-one".