31240034087 has 2 divisors, whose sum is σ = 31240034088. Its totient is φ = 31240034086.

The previous prime is 31240034083. The next prime is 31240034107. The reversal of 31240034087 is 78043004213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31240034087 - 2² = 31240034083 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31240034081) 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, 15620017043 + 15620017044.

It is an arithmetic number, because the mean of its divisors is an integer number (15620017044).

Almost surely, 2^31240034087 is an apocalyptic number.

31240034087 is a deficient number, since it is larger than the sum of its proper divisors (1).

31240034087 is an equidigital number, since it uses as much as digits as its factorization.

31240034087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 32.

The spelling of 31240034087 in words is "thirty-one billion, two hundred forty million, thirty-four thousand, eighty-seven".