31672903 has 2 divisors, whose sum is σ = 31672904. Its totient is φ = 31672902.

The previous prime is 31672891. The next prime is 31672919. The reversal of 31672903 is 30927613.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31672903 - 2⁵ = 31672871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31672933) 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, 15836451 + 15836452.

It is an arithmetic number, because the mean of its divisors is an integer number (15836452).

Almost surely, 2^31672903 is an apocalyptic number.

31672903 is a deficient number, since it is larger than the sum of its proper divisors (1).

31672903 is an equidigital number, since it uses as much as digits as its factorization.

31672903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 31672903 is about 5627.8684241905. The cubic root of 31672903 is about 316.3947658032.

The spelling of 31672903 in words is "thirty-one million, six hundred seventy-two thousand, nine hundred three".