31375103 has 2 divisors, whose sum is σ = 31375104. Its totient is φ = 31375102.

The previous prime is 31375051. The next prime is 31375121. The reversal of 31375103 is 30157313.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31375103 - 2⁶ = 31375039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31375153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15687551 + 15687552.

It is an arithmetic number, because the mean of its divisors is an integer number (15687552).

Almost surely, 2^31375103 is an apocalyptic number.

31375103 is a deficient number, since it is larger than the sum of its proper divisors (1).

31375103 is an equidigital number, since it uses as much as digits as its factorization.

31375103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 945, while the sum is 23.

The square root of 31375103 is about 5601.3483198244. The cubic root of 31375103 is about 315.4000225713.

The spelling of 31375103 in words is "thirty-one million, three hundred seventy-five thousand, one hundred three".