31233047 has 2 divisors, whose sum is σ = 31233048. Its totient is φ = 31233046.

The previous prime is 31233031. The next prime is 31233049. The reversal of 31233047 is 74033213.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31233047 - 2⁴ = 31233031 is a prime.

Together with 31233049, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31233049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15616523 + 15616524.

It is an arithmetic number, because the mean of its divisors is an integer number (15616524).

Almost surely, 2^31233047 is an apocalyptic number.

31233047 is a deficient number, since it is larger than the sum of its proper divisors (1).

31233047 is an equidigital number, since it uses as much as digits as its factorization.

31233047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 31233047 is about 5588.6534156271. The cubic root of 31233047 is about 314.9232936599.

The spelling of 31233047 in words is "thirty-one million, two hundred thirty-three thousand, forty-seven".