31113223123219 has 2 divisors, whose sum is σ = 31113223123220. Its totient is φ = 31113223123218.

The previous prime is 31113223123163. The next prime is 31113223123253. The reversal of 31113223123219 is 91232132231113.

It is an a-pointer prime, because the next prime (31113223123253) can be obtained adding 31113223123219 to its sum of digits (34).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31113223123219 - 2⁴¹ = 28914199867667 is a prime.

It is a super-2 number, since 2×31113223123219² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31113223123819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556611561609 + 15556611561610.

It is an arithmetic number, because the mean of its divisors is an integer number (15556611561610).

Almost surely, 2^{31113223123219} is an apocalyptic number.

31113223123219 is a deficient number, since it is larger than the sum of its proper divisors (1).

31113223123219 is an equidigital number, since it uses as much as digits as its factorization.

31113223123219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The spelling of 31113223123219 in words is "thirty-one trillion, one hundred thirteen billion, two hundred twenty-three million, one hundred twenty-three thousand, two hundred nineteen".