31314233309 has 2 divisors, whose sum is σ = 31314233310. Its totient is φ = 31314233308.

The previous prime is 31314233299. The next prime is 31314233341. The reversal of 31314233309 is 90333241313.

It is an a-pointer prime, because the next prime (31314233341) can be obtained adding 31314233309 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28340712409 + 2973520900 = 168347^2 + 54530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31314233309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31314233369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15657116654 + 15657116655.

It is an arithmetic number, because the mean of its divisors is an integer number (15657116655).

Almost surely, 2^31314233309 is an apocalyptic number.

It is an amenable number.

31314233309 is a deficient number, since it is larger than the sum of its proper divisors (1).

31314233309 is an equidigital number, since it uses as much as digits as its factorization.

31314233309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 32.

The spelling of 31314233309 in words is "thirty-one billion, three hundred fourteen million, two hundred thirty-three thousand, three hundred nine".