31411117 has 2 divisors, whose sum is σ = 31411118. Its totient is φ = 31411116.

The previous prime is 31411103. The next prime is 31411129. The reversal of 31411117 is 71111413.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28933641 + 2477476 = 5379^2 + 1574^2 .

It is an emirp because it is prime and its reverse (71111413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31411117 - 2⁷ = 31410989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31411094 and 31411103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31411517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15705558 + 15705559.

It is an arithmetic number, because the mean of its divisors is an integer number (15705559).

Almost surely, 2^31411117 is an apocalyptic number.

It is an amenable number.

31411117 is a deficient number, since it is larger than the sum of its proper divisors (1).

31411117 is an equidigital number, since it uses as much as digits as its factorization.

31411117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84, while the sum is 19.

The square root of 31411117 is about 5604.5621595268. The cubic root of 31411117 is about 315.5206540276.

The spelling of 31411117 in words is "thirty-one million, four hundred eleven thousand, one hundred seventeen".