31334749 has 2 divisors, whose sum is σ = 31334750. Its totient is φ = 31334748.

The previous prime is 31334747. The next prime is 31334773. The reversal of 31334749 is 94743313.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30140100 + 1194649 = 5490^2 + 1093^2 .

It is a cyclic number.

It is not a de Polignac number, because 31334749 - 2¹ = 31334747 is a prime.

Together with 31334747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31334747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15667374 + 15667375.

It is an arithmetic number, because the mean of its divisors is an integer number (15667375).

Almost surely, 2^31334749 is an apocalyptic number.

It is an amenable number.

31334749 is a deficient number, since it is larger than the sum of its proper divisors (1).

31334749 is an equidigital number, since it uses as much as digits as its factorization.

31334749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 34.

The square root of 31334749 is about 5597.7449924054. The cubic root of 31334749 is about 315.2647442575.

The spelling of 31334749 in words is "thirty-one million, three hundred thirty-four thousand, seven hundred forty-nine".