31122349 has 2 divisors, whose sum is σ = 31122350. Its totient is φ = 31122348.

The previous prime is 31122337. The next prime is 31122373. The reversal of 31122349 is 94322113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22752900 + 8369449 = 4770^2 + 2893^2 .

It is a cyclic number.

It is not a de Polignac number, because 31122349 - 2¹¹ = 31120301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31122449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15561174 + 15561175.

It is an arithmetic number, because the mean of its divisors is an integer number (15561175).

Almost surely, 2^31122349 is an apocalyptic number.

It is an amenable number.

31122349 is a deficient number, since it is larger than the sum of its proper divisors (1).

31122349 is an equidigital number, since it uses as much as digits as its factorization.

31122349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 25.

The square root of 31122349 is about 5578.7408077451. The cubic root of 31122349 is about 314.5507966915.

The spelling of 31122349 in words is "thirty-one million, one hundred twenty-two thousand, three hundred forty-nine".