120031310431 has 4 divisors (see below), whose sum is σ = 120048899112. Its totient is φ = 120013721752.

The previous prime is 120031310419. The next prime is 120031310437. The reversal of 120031310431 is 134013130021.

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

It is a cyclic number.

It is not a de Polignac number, because 120031310431 - 2⁹ = 120031309919 is a prime.

It is a super-2 number, since 2×120031310431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120031310399 and 120031310408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120031310437) 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 in 3 ways as a sum of consecutive naturals, for example, 8784100 + ... + 8797753.

It is an arithmetic number, because the mean of its divisors is an integer number (30012224778).

Almost surely, 2^120031310431 is an apocalyptic number.

120031310431 is a deficient number, since it is larger than the sum of its proper divisors (17588681).

120031310431 is an equidigital number, since it uses as much as digits as its factorization.

120031310431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17588680.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 120031310431 its reverse (134013130021), we get a palindrome (254044440452).

The spelling of 120031310431 in words is "one hundred twenty billion, thirty-one million, three hundred ten thousand, four hundred thirty-one".