31941047 has 2 divisors, whose sum is σ = 31941048. Its totient is φ = 31941046.

The previous prime is 31941037. The next prime is 31941073. The reversal of 31941047 is 74014913.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31941047 - 2⁴ = 31941031 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31941017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15970523 + 15970524.

It is an arithmetic number, because the mean of its divisors is an integer number (15970524).

Almost surely, 2^31941047 is an apocalyptic number.

31941047 is a deficient number, since it is larger than the sum of its proper divisors (1).

31941047 is an equidigital number, since it uses as much as digits as its factorization.

31941047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 31941047 is about 5651.6410890997. The cubic root of 31941047 is about 317.2851279327.

The spelling of 31941047 in words is "thirty-one million, nine hundred forty-one thousand, forty-seven".