31414709 has 2 divisors, whose sum is σ = 31414710. Its totient is φ = 31414708.

The previous prime is 31414699. The next prime is 31414723. The reversal of 31414709 is 90741413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31080625 + 334084 = 5575^2 + 578^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31414709 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31417709) 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, 15707354 + 15707355.

It is an arithmetic number, because the mean of its divisors is an integer number (15707355).

Almost surely, 2^31414709 is an apocalyptic number.

It is an amenable number.

31414709 is a deficient number, since it is larger than the sum of its proper divisors (1).

31414709 is an equidigital number, since it uses as much as digits as its factorization.

31414709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 31414709 is about 5604.8826035877. The cubic root of 31414709 is about 315.5326806295.

It can be divided in two parts, 31414 and 709, that added together give a palindrome (32123).

The spelling of 31414709 in words is "thirty-one million, four hundred fourteen thousand, seven hundred nine".