10349981 has 2 divisors, whose sum is σ = 10349982. Its totient is φ = 10349980.

The previous prime is 10349953. The next prime is 10350019. The reversal of 10349981 is 18994301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5359225 + 4990756 = 2315^2 + 2234^2 .

It is a cyclic number.

It is not a de Polignac number, because 10349981 - 2¹⁰ = 10348957 is a prime.

It is a super-2 number, since 2×10349981² = 214244213400722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10349921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5174990 + 5174991.

It is an arithmetic number, because the mean of its divisors is an integer number (5174991).

Almost surely, 2^10349981 is an apocalyptic number.

It is an amenable number.

10349981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10349981 is an equidigital number, since it uses as much as digits as its factorization.

10349981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 10349981 is about 3217.1386354958. The cubic root of 10349981 is about 217.9280757594.

The spelling of 10349981 in words is "ten million, three hundred forty-nine thousand, nine hundred eighty-one".