31220421110 has 8 divisors (see below), whose sum is σ = 56196758016. Its totient is φ = 12488168440.

The previous prime is 31220421079. The next prime is 31220421119. The reversal of 31220421110 is 1112402213.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31220421119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1561021046 + ... + 1561021065.

It is an arithmetic number, because the mean of its divisors is an integer number (7024594752).

Almost surely, 2^31220421110 is an apocalyptic number.

31220421110 is a deficient number, since it is larger than the sum of its proper divisors (24976336906).

31220421110 is a wasteful number, since it uses less digits than its factorization.

31220421110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122042118.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 31220421110 its reverse (1112402213), we get a palindrome (32332823323).

The spelling of 31220421110 in words is "thirty-one billion, two hundred twenty million, four hundred twenty-one thousand, one hundred ten".