201230031031 has 4 divisors (see below), whose sum is σ = 201285030600. Its totient is φ = 201175031464.

The previous prime is 201230031001. The next prime is 201230031043. The reversal of 201230031031 is 130130032102.

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 201230031031 - 2¹⁹ = 201229506743 is a prime.

It is a super-2 number, since 2×201230031031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201230030996 and 201230031014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201230031001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27494296 + ... + 27501613.

It is an arithmetic number, because the mean of its divisors is an integer number (50321257650).

Almost surely, 2^201230031031 is an apocalyptic number.

201230031031 is a deficient number, since it is larger than the sum of its proper divisors (54999569).

201230031031 is an equidigital number, since it uses as much as digits as its factorization.

201230031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54999568.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 201230031031 its reverse (130130032102), we get a palindrome (331360063133).

The spelling of 201230031031 in words is "two hundred one billion, two hundred thirty million, thirty-one thousand, thirty-one".