120343131421 has 2 divisors, whose sum is σ = 120343131422. Its totient is φ = 120343131420.

The previous prime is 120343131367. The next prime is 120343131523. The reversal of 120343131421 is 124131343021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74829602500 + 45513528921 = 273550^2 + 213339^2 .

It is a cyclic number.

It is not a de Polignac number, because 120343131421 - 2³³ = 111753196829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120343101421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60171565710 + 60171565711.

It is an arithmetic number, because the mean of its divisors is an integer number (60171565711).

Almost surely, 2^120343131421 is an apocalyptic number.

It is an amenable number.

120343131421 is a deficient number, since it is larger than the sum of its proper divisors (1).

120343131421 is an equidigital number, since it uses as much as digits as its factorization.

120343131421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 120343131421 its reverse (124131343021), we get a palindrome (244474474442).

The spelling of 120343131421 in words is "one hundred twenty billion, three hundred forty-three million, one hundred thirty-one thousand, four hundred twenty-one".