31314271 has 2 divisors, whose sum is σ = 31314272. Its totient is φ = 31314270.

The previous prime is 31314253. The next prime is 31314281. The reversal of 31314271 is 17241313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31314271 - 2²¹ = 29217119 is a prime.

It is a super-2 number, since 2×31314271² = 1961167136522882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31314251) 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, 15657135 + 15657136.

It is an arithmetic number, because the mean of its divisors is an integer number (15657136).

Almost surely, 2^31314271 is an apocalyptic number.

31314271 is a deficient number, since it is larger than the sum of its proper divisors (1).

31314271 is an equidigital number, since it uses as much as digits as its factorization.

31314271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 22.

The square root of 31314271 is about 5595.9155640521. The cubic root of 31314271 is about 315.1960516342.

Adding to 31314271 its reverse (17241313), we get a palindrome (48555584).

The spelling of 31314271 in words is "thirty-one million, three hundred fourteen thousand, two hundred seventy-one".