31745107 has 2 divisors, whose sum is σ = 31745108. Its totient is φ = 31745106.

The previous prime is 31745059. The next prime is 31745141. The reversal of 31745107 is 70154713.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31745107 is a prime.

It is not a weakly prime, because it can be changed into another prime (31745167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15872553 + 15872554.

It is an arithmetic number, because the mean of its divisors is an integer number (15872554).

Almost surely, 2^31745107 is an apocalyptic number.

31745107 is a deficient number, since it is larger than the sum of its proper divisors (1).

31745107 is an equidigital number, since it uses as much as digits as its factorization.

31745107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 31745107 is about 5634.2796345229. The cubic root of 31745107 is about 316.6350093315.

It can be divided in two parts, 3174 and 5107, that added together give a square (8281 = 91²).

The spelling of 31745107 in words is "thirty-one million, seven hundred forty-five thousand, one hundred seven".