31296149 has 2 divisors, whose sum is σ = 31296150. Its totient is φ = 31296148.

The previous prime is 31296119. The next prime is 31296197. The reversal of 31296149 is 94169213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25502500 + 5793649 = 5050^2 + 2407^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31296149 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 (31296119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15648074 + 15648075.

It is an arithmetic number, because the mean of its divisors is an integer number (15648075).

Almost surely, 2^31296149 is an apocalyptic number.

It is an amenable number.

31296149 is a deficient number, since it is larger than the sum of its proper divisors (1).

31296149 is an equidigital number, since it uses as much as digits as its factorization.

31296149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 35.

The square root of 31296149 is about 5594.2961130065. The cubic root of 31296149 is about 315.1352371356.

The spelling of 31296149 in words is "thirty-one million, two hundred ninety-six thousand, one hundred forty-nine".