31220131214 has 16 divisors (see below), whose sum is σ = 47028103200. Its totient is φ = 15544198560.

The previous prime is 31220131141. The next prime is 31220131301. The reversal of 31220131214 is 41213102213.

It is a super-2 number, since 2×31220131214² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 605312 + ... + 654860.

It is an arithmetic number, because the mean of its divisors is an integer number (2939256450).

Almost surely, 2^31220131214 is an apocalyptic number.

31220131214 is a deficient number, since it is larger than the sum of its proper divisors (15807971986).

31220131214 is a wasteful number, since it uses less digits than its factorization.

31220131214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50875.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31220131214 its reverse (41213102213), we get a palindrome (72433233427).

The spelling of 31220131214 in words is "thirty-one billion, two hundred twenty million, one hundred thirty-one thousand, two hundred fourteen".