31119007 has 2 divisors, whose sum is σ = 31119008. Its totient is φ = 31119006.

The previous prime is 31118999. The next prime is 31119013. The reversal of 31119007 is 70091113.

It is a strong prime.

It is an emirp because it is prime and its reverse (70091113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31119007 - 2³ = 31118999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31119037) 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, 15559503 + 15559504.

It is an arithmetic number, because the mean of its divisors is an integer number (15559504).

Almost surely, 2^31119007 is an apocalyptic number.

31119007 is a deficient number, since it is larger than the sum of its proper divisors (1).

31119007 is an equidigital number, since it uses as much as digits as its factorization.

31119007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189, while the sum is 22.

The square root of 31119007 is about 5578.4412697455. The cubic root of 31119007 is about 314.5395371901.

It can be divided in two parts, 3111900 and 7, that multiplied together give a triangular number (21783300 = T₆₆₀₀).

The spelling of 31119007 in words is "thirty-one million, one hundred nineteen thousand, seven".