31894349 has 2 divisors, whose sum is σ = 31894350. Its totient is φ = 31894348.

The previous prime is 31894339. The next prime is 31894367. The reversal of 31894349 is 94349813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30858025 + 1036324 = 5555^2 + 1018^2 .

It is a cyclic number.

It is not a de Polignac number, because 31894349 - 2²⁴ = 15117133 is a prime.

It is a super-3 number, since 3×31894349³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31894309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15947174 + 15947175.

It is an arithmetic number, because the mean of its divisors is an integer number (15947175).

Almost surely, 2^31894349 is an apocalyptic number.

It is an amenable number.

31894349 is a deficient number, since it is larger than the sum of its proper divisors (1).

31894349 is an equidigital number, since it uses as much as digits as its factorization.

31894349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 41.

The square root of 31894349 is about 5647.5082115921. The cubic root of 31894349 is about 317.1304282718.

The spelling of 31894349 in words is "thirty-one million, eight hundred ninety-four thousand, three hundred forty-nine".