31740103 has 2 divisors, whose sum is σ = 31740104. Its totient is φ = 31740102.

The previous prime is 31740091. The next prime is 31740119. The reversal of 31740103 is 30104713.

It is a weak prime.

It is an emirp because it is prime and its reverse (30104713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31740103 - 2¹⁷ = 31609031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31740143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15870051 + 15870052.

It is an arithmetic number, because the mean of its divisors is an integer number (15870052).

Almost surely, 2^31740103 is an apocalyptic number.

31740103 is a deficient number, since it is larger than the sum of its proper divisors (1).

31740103 is an equidigital number, since it uses as much as digits as its factorization.

31740103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 31740103 is about 5633.8355496056. The cubic root of 31740103 is about 316.6183713359.

Adding to 31740103 its reverse (30104713), we get a palindrome (61844816).

The spelling of 31740103 in words is "thirty-one million, seven hundred forty thousand, one hundred three".