120431212345 has 4 divisors (see below), whose sum is σ = 144517454820. Its totient is φ = 96344969872.

The previous prime is 120431212301. The next prime is 120431212373. The reversal of 120431212345 is 543212134021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17653905424 + 102777306921 = 132868^2 + 320589^2 .

It is a cyclic number.

It is not a de Polignac number, because 120431212345 - 2⁹ = 120431211833 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12043121230 + ... + 12043121239.

It is an arithmetic number, because the mean of its divisors is an integer number (36129363705).

Almost surely, 2^120431212345 is an apocalyptic number.

It is an amenable number.

120431212345 is a deficient number, since it is larger than the sum of its proper divisors (24086242475).

120431212345 is an equidigital number, since it uses as much as digits as its factorization.

120431212345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24086242474.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 120431212345 its reverse (543212134021), we get a palindrome (663643346366).

The spelling of 120431212345 in words is "one hundred twenty billion, four hundred thirty-one million, two hundred twelve thousand, three hundred forty-five".