31119983 has 2 divisors, whose sum is σ = 31119984. Its totient is φ = 31119982.

The previous prime is 31119971. The next prime is 31120009. The reversal of 31119983 is 38991113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31119983 - 2⁶ = 31119919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31119083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15559991 + 15559992.

It is an arithmetic number, because the mean of its divisors is an integer number (15559992).

Almost surely, 2^31119983 is an apocalyptic number.

31119983 is a deficient number, since it is larger than the sum of its proper divisors (1).

31119983 is an equidigital number, since it uses as much as digits as its factorization.

31119983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 35.

The square root of 31119983 is about 5578.5287486935. The cubic root of 31119983 is about 314.5428255060.

The spelling of 31119983 in words is "thirty-one million, one hundred nineteen thousand, nine hundred eighty-three".