31301231000131 has 2 divisors, whose sum is σ = 31301231000132. Its totient is φ = 31301231000130.

The previous prime is 31301231000129. The next prime is 31301231000141. The reversal of 31301231000131 is 13100013210313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31301231000131 - 2¹ = 31301231000129 is a prime.

It is a super-2 number, since 2×31301231000131² (a number of 28 digits) contains 22 as substring.

Together with 31301231000129, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 31301231000099 and 31301231000108.

It is not a weakly prime, because it can be changed into another prime (31301231000111) 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 as a sum of consecutive naturals, namely, 15650615500065 + 15650615500066.

It is an arithmetic number, because the mean of its divisors is an integer number (15650615500066).

Almost surely, 2^{31301231000131} is an apocalyptic number.

31301231000131 is a deficient number, since it is larger than the sum of its proper divisors (1).

31301231000131 is an equidigital number, since it uses as much as digits as its factorization.

31301231000131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 31301231000131 its reverse (13100013210313), we get a palindrome (44401244210444).

The spelling of 31301231000131 in words is "thirty-one trillion, three hundred one billion, two hundred thirty-one million, one hundred thirty-one", and thus it is an aban number.