31224031342142 has 16 divisors (see below), whose sum is σ = 47862851823360. Its totient is φ = 15270168139608.

The previous prime is 31224031342081. The next prime is 31224031342169. The reversal of 31224031342142 is 24124313042213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31224031342099 and 31224031342108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105035408 + ... + 105332259.

It is an arithmetic number, because the mean of its divisors is an integer number (2991428238960).

Almost surely, 2^{31224031342142} is an apocalyptic number.

31224031342142 is a deficient number, since it is larger than the sum of its proper divisors (16638820481218).

31224031342142 is a wasteful number, since it uses less digits than its factorization.

31224031342142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210369295.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 31224031342142 its reverse (24124313042213), we get a palindrome (55348344384355).

The spelling of 31224031342142 in words is "thirty-one trillion, two hundred twenty-four billion, thirty-one million, three hundred forty-two thousand, one hundred forty-two".