201201031 has 4 divisors (see below), whose sum is σ = 205481952. Its totient is φ = 196920112.

The previous prime is 201201023. The next prime is 201201037. The reversal of 201201031 is 130102102.

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 201201031 - 2³ = 201201023 is a prime.

It is a super-2 number, since 2×201201031² = 80963709750925922, 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 = 201200999 and 201201017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201201037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2140390 + ... + 2140483.

It is an arithmetic number, because the mean of its divisors is an integer number (51370488).

Almost surely, 2^201201031 is an apocalyptic number.

201201031 is a deficient number, since it is larger than the sum of its proper divisors (4280921).

201201031 is an equidigital number, since it uses as much as digits as its factorization.

201201031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4280920.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 201201031 is about 14184.5349236413. The cubic root of 201201031 is about 585.9718241762.

Adding to 201201031 its reverse (130102102), we get a palindrome (331303133).

The spelling of 201201031 in words is "two hundred one million, two hundred one thousand, thirty-one".