201620031 has 8 divisors (see below), whose sum is σ = 272065920. Its totient is φ = 132793752.

The previous prime is 201620011. The next prime is 201620033. The reversal of 201620031 is 130026102.

201620031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201620031 - 2⁶ = 201619967 is a prime.

It is a super-2 number, since 2×201620031² = 81301273800881922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201620033) 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, 404611 + ... + 405108.

It is an arithmetic number, because the mean of its divisors is an integer number (34008240).

Almost surely, 2^201620031 is an apocalyptic number.

201620031 is a deficient number, since it is larger than the sum of its proper divisors (70445889).

201620031 is an equidigital number, since it uses as much as digits as its factorization.

201620031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809805.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 201620031 is about 14199.2968487880. The cubic root of 201620031 is about 586.3783031376.

Adding to 201620031 its reverse (130026102), we get a palindrome (331646133).

The spelling of 201620031 in words is "two hundred one million, six hundred twenty thousand, thirty-one".