31300212313231 has 4 divisors (see below), whose sum is σ = 31300223991264. Its totient is φ = 31300200635200.

The previous prime is 31300212313207. The next prime is 31300212313241. The reversal of 31300212313231 is 13231321200313.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 31300212313231 - 2²³ = 31300203924623 is a prime.

It is a super-2 number, since 2×31300212313231² (a number of 28 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 = 31300212313196 and 31300212313205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31300212313241) 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, 412266 + ... + 7922776.

It is an arithmetic number, because the mean of its divisors is an integer number (7825055997816).

Almost surely, 2^{31300212313231} is an apocalyptic number.

31300212313231 is a deficient number, since it is larger than the sum of its proper divisors (11678033).

31300212313231 is an equidigital number, since it uses as much as digits as its factorization.

31300212313231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11678032.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31300212313231 its reverse (13231321200313), we get a palindrome (44531533513544).

The spelling of 31300212313231 in words is "thirty-one trillion, three hundred billion, two hundred twelve million, three hundred thirteen thousand, two hundred thirty-one".