31094491 has 2 divisors, whose sum is σ = 31094492. Its totient is φ = 31094490.

The previous prime is 31094477. The next prime is 31094509. The reversal of 31094491 is 19449013.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31094491 - 2¹¹ = 31092443 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31094191) 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, 15547245 + 15547246.

It is an arithmetic number, because the mean of its divisors is an integer number (15547246).

Almost surely, 2^31094491 is an apocalyptic number.

31094491 is a deficient number, since it is larger than the sum of its proper divisors (1).

31094491 is an equidigital number, since it uses as much as digits as its factorization.

31094491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 31094491 is about 5576.2434487745. The cubic root of 31094491 is about 314.4569159035.

The spelling of 31094491 in words is "thirty-one million, ninety-four thousand, four hundred ninety-one".