31423344421142 has 8 divisors (see below), whose sum is σ = 48284651183832. Its totient is φ = 15328460693200.

The previous prime is 31423344421103. The next prime is 31423344421169. The reversal of 31423344421142 is 24112444332413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31423344421096 and 31423344421105.

It is a congruent number.

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, 191605758584 + ... + 191605758747.

It is an arithmetic number, because the mean of its divisors is an integer number (6035581397979).

Almost surely, 2^{31423344421142} is an apocalyptic number.

31423344421142 is a deficient number, since it is larger than the sum of its proper divisors (16861306762690).

31423344421142 is a wasteful number, since it uses less digits than its factorization.

31423344421142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383211517374.

The product of its digits is 221184, while the sum is 38.

Adding to 31423344421142 its reverse (24112444332413), we get a palindrome (55535788753555).

The spelling of 31423344421142 in words is "thirty-one trillion, four hundred twenty-three billion, three hundred forty-four million, four hundred twenty-one thousand, one hundred forty-two".