201231310122031 has 16 divisors (see below), whose sum is σ = 232119335778880. Its totient is φ = 170878878374400.

The previous prime is 201231310121999. The next prime is 201231310122077. The reversal of 201231310122031 is 130221013132102.

It is not a de Polignac number, because 201231310122031 - 2⁵ = 201231310121999 is a prime.

It is a super-2 number, since 2×201231310122031² (a number of 29 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 = 201231310121993 and 201231310122011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201231310120031) 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 15 ways as a sum of consecutive naturals, for example, 11745420 + ... + 23246881.

It is an arithmetic number, because the mean of its divisors is an integer number (14507458486180).

Almost surely, 2^{201231310122031} is an apocalyptic number.

201231310122031 is a deficient number, since it is larger than the sum of its proper divisors (30888025656849).

201231310122031 is a wasteful number, since it uses less digits than its factorization.

201231310122031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34999954.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 201231310122031 its reverse (130221013132102), we get a palindrome (331452323254133).

The spelling of 201231310122031 in words is "two hundred one trillion, two hundred thirty-one billion, three hundred ten million, one hundred twenty-two thousand, thirty-one".