201031031031 has 4 divisors (see below), whose sum is σ = 268041374712. Its totient is φ = 134020687352.

The previous prime is 201031031027. The next prime is 201031031063. The reversal of 201031031031 is 130130130102.

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 201031031031 - 2² = 201031031027 is a prime.

It is a super-2 number, since 2×201031031031² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201031031031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201031031011) 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, 33505171836 + ... + 33505171841.

It is an arithmetic number, because the mean of its divisors is an integer number (67010343678).

Almost surely, 2^201031031031 is an apocalyptic number.

201031031031 is a deficient number, since it is larger than the sum of its proper divisors (67010343681).

201031031031 is an equidigital number, since it uses as much as digits as its factorization.

201031031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67010343680.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 201031031031 its reverse (130130130102), we get a palindrome (331161161133).

The spelling of 201031031031 in words is "two hundred one billion, thirty-one million, thirty-one thousand, thirty-one".