31641227707 has 2 divisors, whose sum is σ = 31641227708. Its totient is φ = 31641227706.

The previous prime is 31641227669. The next prime is 31641227791. The reversal of 31641227707 is 70772214613.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31641227707 - 2¹⁵ = 31641194939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31641227707.

It is not a weakly prime, because it can be changed into another prime (31641227207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15820613853 + 15820613854.

It is an arithmetic number, because the mean of its divisors is an integer number (15820613854).

Almost surely, 2^31641227707 is an apocalyptic number.

31641227707 is a deficient number, since it is larger than the sum of its proper divisors (1).

31641227707 is an equidigital number, since it uses as much as digits as its factorization.

31641227707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 40.

The spelling of 31641227707 in words is "thirty-one billion, six hundred forty-one million, two hundred twenty-seven thousand, seven hundred seven".