31103012200231 has 16 divisors (see below), whose sum is σ = 32688610606080. Its totient is φ = 29554996645440.

The previous prime is 31103012200229. The next prime is 31103012200277. The reversal of 31103012200231 is 13200221030113.

It is a cyclic number.

It is not a de Polignac number, because 31103012200231 - 2¹ = 31103012200229 is a prime.

It is a super-3 number, since 3×31103012200231³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31103012200199 and 31103012200208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31103012230231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8354061 + ... + 11488966.

It is an arithmetic number, because the mean of its divisors is an integer number (2043038162880).

Almost surely, 2^{31103012200231} is an apocalyptic number.

31103012200231 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

31103012200231 is a deficient number, since it is larger than the sum of its proper divisors (1585598405849).

31103012200231 is a wasteful number, since it uses less digits than its factorization.

31103012200231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19843974.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31103012200231 its reverse (13200221030113), we get a palindrome (44303233230344).

The spelling of 31103012200231 in words is "thirty-one trillion, one hundred three billion, twelve million, two hundred thousand, two hundred thirty-one".