31344407 has 2 divisors, whose sum is σ = 31344408. Its totient is φ = 31344406.

The previous prime is 31344403. The next prime is 31344419. The reversal of 31344407 is 70444313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31344407 - 2² = 31344403 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31344403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15672203 + 15672204.

It is an arithmetic number, because the mean of its divisors is an integer number (15672204).

Almost surely, 2^31344407 is an apocalyptic number.

31344407 is a deficient number, since it is larger than the sum of its proper divisors (1).

31344407 is an equidigital number, since it uses as much as digits as its factorization.

31344407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 31344407 is about 5598.6075947507. The cubic root of 31344407 is about 315.2971312424.

The spelling of 31344407 in words is "thirty-one million, three hundred forty-four thousand, four hundred seven".