31302122143 has 2 divisors, whose sum is σ = 31302122144. Its totient is φ = 31302122142.

The previous prime is 31302122141. The next prime is 31302122149. The reversal of 31302122143 is 34122120313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31302122143 - 2¹ = 31302122141 is a prime.

Together with 31302122141, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31302122141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15651061071 + 15651061072.

It is an arithmetic number, because the mean of its divisors is an integer number (15651061072).

Almost surely, 2^31302122143 is an apocalyptic number.

31302122143 is a deficient number, since it is larger than the sum of its proper divisors (1).

31302122143 is an equidigital number, since it uses as much as digits as its factorization.

31302122143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31302122143 its reverse (34122120313), we get a palindrome (65424242456).

The spelling of 31302122143 in words is "thirty-one billion, three hundred two million, one hundred twenty-two thousand, one hundred forty-three".