31214222209 has 8 divisors (see below), whose sum is σ = 31307996160. Its totient is φ = 31120549056.

The previous prime is 31214222197. The next prime is 31214222267. The reversal of 31214222209 is 90222241213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31214222209 is a prime.

It is a super-2 number, since 2×31214222209² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31214222279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619632 + ... + 668110.

It is an arithmetic number, because the mean of its divisors is an integer number (3913499520).

Almost surely, 2^31214222209 is an apocalyptic number.

It is an amenable number.

31214222209 is a deficient number, since it is larger than the sum of its proper divisors (93773951).

31214222209 is a wasteful number, since it uses less digits than its factorization.

31214222209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50399.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 31214222209 in words is "thirty-one billion, two hundred fourteen million, two hundred twenty-two thousand, two hundred nine".