31210120343 has 2 divisors, whose sum is σ = 31210120344. Its totient is φ = 31210120342.

The previous prime is 31210120307. The next prime is 31210120373. The reversal of 31210120343 is 34302101213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31210120343 - 2¹⁶ = 31210054807 is a prime.

It is a super-2 number, since 2×31210120343² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31210120303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15605060171 + 15605060172.

It is an arithmetic number, because the mean of its divisors is an integer number (15605060172).

Almost surely, 2^31210120343 is an apocalyptic number.

31210120343 is a deficient number, since it is larger than the sum of its proper divisors (1).

31210120343 is an equidigital number, since it uses as much as digits as its factorization.

31210120343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31210120343 its reverse (34302101213), we get a palindrome (65512221556).

The spelling of 31210120343 in words is "thirty-one billion, two hundred ten million, one hundred twenty thousand, three hundred forty-three".