31314313 has 2 divisors, whose sum is σ = 31314314. Its totient is φ = 31314312.

The previous prime is 31314281. The next prime is 31314317. The reversal of 31314313 is 31341313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27164944 + 4149369 = 5212^2 + 2037^2 .

It is a cyclic number.

It is not a de Polignac number, because 31314313 - 2⁵ = 31314281 is a prime.

It is not a weakly prime, because it can be changed into another prime (31314317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15657156 + 15657157.

It is an arithmetic number, because the mean of its divisors is an integer number (15657157).

Almost surely, 2^31314313 is an apocalyptic number.

It is an amenable number.

31314313 is a deficient number, since it is larger than the sum of its proper divisors (1).

31314313 is an equidigital number, since it uses as much as digits as its factorization.

31314313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 19.

The square root of 31314313 is about 5595.9193167879. The cubic root of 31314313 is about 315.1961925522.

Adding to 31314313 its reverse (31341313), we get a palindrome (62655626).

Subtracting 31314313 from its reverse (31341313), we obtain a cube (27000 = 30³).

The spelling of 31314313 in words is "thirty-one million, three hundred fourteen thousand, three hundred thirteen".