201142031 has 2 divisors, whose sum is σ = 201142032. Its totient is φ = 201142030.

The previous prime is 201142021. The next prime is 201142063. The reversal of 201142031 is 130241102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201142031 - 2¹⁰ = 201141007 is a prime.

It is a super-2 number, since 2×201142031² = 80916233269609922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 201141997 and 201142015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201142021) 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 as a sum of consecutive naturals, namely, 100571015 + 100571016.

It is an arithmetic number, because the mean of its divisors is an integer number (100571016).

Almost surely, 2^201142031 is an apocalyptic number.

201142031 is a deficient number, since it is larger than the sum of its proper divisors (1).

201142031 is an equidigital number, since it uses as much as digits as its factorization.

201142031 is an odious number, because the sum of its binary digits is odd.

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

The square root of 201142031 is about 14182.4550413530. The cubic root of 201142031 is about 585.9145419689.

Adding to 201142031 its reverse (130241102), we get a palindrome (331383133).

The spelling of 201142031 in words is "two hundred one million, one hundred forty-two thousand, thirty-one".