31122320112019 has 16 divisors (see below), whose sum is σ = 33622012327680. Its totient is φ = 28718801989920.

The previous prime is 31122320112011. The next prime is 31122320112029. The reversal of 31122320112019 is 91021102322113.

It is a cyclic number.

It is not a de Polignac number, because 31122320112019 - 2³ = 31122320112011 is a prime.

It is a super-2 number, since 2×31122320112019² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31122320112011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138867912 + ... + 139091845.

It is an arithmetic number, because the mean of its divisors is an integer number (2101375770480).

Almost surely, 2^{31122320112019} is an apocalyptic number.

31122320112019 is a deficient number, since it is larger than the sum of its proper divisors (2499692215661).

31122320112019 is a wasteful number, since it uses less digits than its factorization.

31122320112019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277959930.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 31122320112019 in words is "thirty-one trillion, one hundred twenty-two billion, three hundred twenty million, one hundred twelve thousand, nineteen".