31130747 has 2 divisors, whose sum is σ = 31130748. Its totient is φ = 31130746.

The previous prime is 31130741. The next prime is 31130783. The reversal of 31130747 is 74703113.

It is a weak prime.

It is an emirp because it is prime and its reverse (74703113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31130747 - 2¹⁰ = 31129723 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31130741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15565373 + 15565374.

It is an arithmetic number, because the mean of its divisors is an integer number (15565374).

Almost surely, 2^31130747 is an apocalyptic number.

31130747 is a deficient number, since it is larger than the sum of its proper divisors (1).

31130747 is an equidigital number, since it uses as much as digits as its factorization.

31130747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 31130747 is about 5579.4934357879. The cubic root of 31130747 is about 314.5790867586.

The spelling of 31130747 in words is "thirty-one million, one hundred thirty thousand, seven hundred forty-seven".