201005031 has 4 divisors (see below), whose sum is σ = 268006712. Its totient is φ = 134003352.

The previous prime is 201004997. The next prime is 201005033. The reversal of 201005031 is 130500102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 201005031 - 2⁶ = 201004967 is a prime.

It is a super-2 number, since 2×201005031² = 80806044974621922, 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 = 201004998 and 201005016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201005033) 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, 33500836 + ... + 33500841.

It is an arithmetic number, because the mean of its divisors is an integer number (67001678).

Almost surely, 2^201005031 is an apocalyptic number.

201005031 is a deficient number, since it is larger than the sum of its proper divisors (67001681).

201005031 is an equidigital number, since it uses as much as digits as its factorization.

201005031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67001680.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 201005031 is about 14177.6243073372. The cubic root of 201005031 is about 585.7814875246.

Adding to 201005031 its reverse (130500102), we get a palindrome (331505133).

The spelling of 201005031 in words is "two hundred one million, five thousand, thirty-one".