31220341002142 has 16 divisors (see below), whose sum is σ = 49299406986960. Its totient is φ = 14787343063872.

The previous prime is 31220341002101. The next prime is 31220341002187. The reversal of 31220341002142 is 24120014302213.

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, 33971583 + ... + 34878490.

It is an arithmetic number, because the mean of its divisors is an integer number (3081212936685).

Almost surely, 2^{31220341002142} is an apocalyptic number.

31220341002142 is a deficient number, since it is larger than the sum of its proper divisors (18079065984818).

31220341002142 is a wasteful number, since it uses less digits than its factorization.

31220341002142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68862027.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 31220341002142 its reverse (24120014302213), we get a palindrome (55340355304355).

The spelling of 31220341002142 in words is "thirty-one trillion, two hundred twenty billion, three hundred forty-one million, two thousand, one hundred forty-two".