31052249 has 2 divisors, whose sum is σ = 31052250. Its totient is φ = 31052248.

The previous prime is 31052239. The next prime is 31052261. The reversal of 31052249 is 94225013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17598025 + 13454224 = 4195^2 + 3668^2 .

It is an emirp because it is prime and its reverse (94225013) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31052249 - 2²⁴ = 14275033 is a prime.

It is not a weakly prime, because it can be changed into another prime (31052239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15526124 + 15526125.

It is an arithmetic number, because the mean of its divisors is an integer number (15526125).

Almost surely, 2^31052249 is an apocalyptic number.

It is an amenable number.

31052249 is a deficient number, since it is larger than the sum of its proper divisors (1).

31052249 is an equidigital number, since it uses as much as digits as its factorization.

31052249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 31052249 is about 5572.4544861309. The cubic root of 31052249 is about 314.3144543474.

The spelling of 31052249 in words is "thirty-one million, fifty-two thousand, two hundred forty-nine".