31111121321219 has 8 divisors (see below), whose sum is σ = 32115758453760. Its totient is φ = 30106549974600.

The previous prime is 31111121321213. The next prime is 31111121321239. The reversal of 31111121321219 is 91212312111113.

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

It is a cyclic number.

It is not a de Polignac number, because 31111121321219 - 2²⁰ = 31111120272643 is a prime.

It is a super-2 number, since 2×31111121321219² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31111121321191 and 31111121321200.

It is not an unprimeable number, because it can be changed into a prime (31111121321213) 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, 15484487 + ... + 17377904.

It is an arithmetic number, because the mean of its divisors is an integer number (4014469806720).

Almost surely, 2^{31111121321219} is an apocalyptic number.

31111121321219 is a deficient number, since it is larger than the sum of its proper divisors (1004637132541).

31111121321219 is a wasteful number, since it uses less digits than its factorization.

31111121321219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32892961.

The product of its digits is 648, while the sum is 29.

The spelling of 31111121321219 in words is "thirty-one trillion, one hundred eleven billion, one hundred twenty-one million, three hundred twenty-one thousand, two hundred nineteen".