31266713 has 2 divisors, whose sum is σ = 31266714. Its totient is φ = 31266712.

The previous prime is 31266701. The next prime is 31266721. The reversal of 31266713 is 31766213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24522304 + 6744409 = 4952^2 + 2597^2 .

It is an emirp because it is prime and its reverse (31766213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31266713 - 2²⁰ = 30218137 is a prime.

It is not a weakly prime, because it can be changed into another prime (31266733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15633356 + 15633357.

It is an arithmetic number, because the mean of its divisors is an integer number (15633357).

Almost surely, 2^31266713 is an apocalyptic number.

It is an amenable number.

31266713 is a deficient number, since it is larger than the sum of its proper divisors (1).

31266713 is an equidigital number, since it uses as much as digits as its factorization.

31266713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 29.

The square root of 31266713 is about 5591.6646000990. The cubic root of 31266713 is about 315.0364046277.

Subtracting 31266713 from its reverse (31766213), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 31266713 in words is "thirty-one million, two hundred sixty-six thousand, seven hundred thirteen".