31120247219 has 2 divisors, whose sum is σ = 31120247220. Its totient is φ = 31120247218.

The previous prime is 31120247189. The next prime is 31120247237. The reversal of 31120247219 is 91274202113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31120247219 - 2¹² = 31120243123 is a prime.

It is a super-2 number, since 2×31120247219² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31120247239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15560123609 + 15560123610.

It is an arithmetic number, because the mean of its divisors is an integer number (15560123610).

Almost surely, 2^31120247219 is an apocalyptic number.

31120247219 is a deficient number, since it is larger than the sum of its proper divisors (1).

31120247219 is an equidigital number, since it uses as much as digits as its factorization.

31120247219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 31120247219 in words is "thirty-one billion, one hundred twenty million, two hundred forty-seven thousand, two hundred nineteen".