31418017 has 2 divisors, whose sum is σ = 31418018. Its totient is φ = 31418016.

The previous prime is 31417999. The next prime is 31418021. The reversal of 31418017 is 71081413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24443136 + 6974881 = 4944^2 + 2641^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31418017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31417982 and 31418000.

It is not a weakly prime, because it can be changed into another prime (31418917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15709008 + 15709009.

It is an arithmetic number, because the mean of its divisors is an integer number (15709009).

Almost surely, 2^31418017 is an apocalyptic number.

It is an amenable number.

31418017 is a deficient number, since it is larger than the sum of its proper divisors (1).

31418017 is an equidigital number, since it uses as much as digits as its factorization.

31418017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 31418017 is about 5605.1776956667. The cubic root of 31418017 is about 315.5437555421.

The spelling of 31418017 in words is "thirty-one million, four hundred eighteen thousand, seventeen".