31606051 has 2 divisors, whose sum is σ = 31606052. Its totient is φ = 31606050.

The previous prime is 31606049. The next prime is 31606061. The reversal of 31606051 is 15060613.

It is a weak prime.

It is an emirp because it is prime and its reverse (15060613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31606051 - 2¹ = 31606049 is a prime.

Together with 31606049, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31606061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15803025 + 15803026.

It is an arithmetic number, because the mean of its divisors is an integer number (15803026).

Almost surely, 2^31606051 is an apocalyptic number.

31606051 is a deficient number, since it is larger than the sum of its proper divisors (1).

31606051 is an equidigital number, since it uses as much as digits as its factorization.

31606051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 31606051 is about 5621.9259155560. The cubic root of 31606051 is about 316.1720041791.

Adding to 31606051 its reverse (15060613), we get a palindrome (46666664).

The spelling of 31606051 in words is "thirty-one million, six hundred six thousand, fifty-one".