81103348 has 6 divisors (see below), whose sum is σ = 141930866. Its totient is φ = 40551672.

The previous prime is 81103331. The next prime is 81103369. The reversal of 81103348 is 84330118.

It can be written as a sum of positive squares in only one way, i.e., 45724644 + 35378704 = 6762^2 + 5948^2 .

It is a super-3 number, since 3×81103348³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10137915 + ... + 10137922.

Almost surely, 2^81103348 is an apocalyptic number.

It is an amenable number.

81103348 is a deficient number, since it is larger than the sum of its proper divisors (60827518).

81103348 is a wasteful number, since it uses less digits than its factorization.

81103348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20275841 (or 20275839 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 81103348 is about 9005.7397253085. The cubic root of 81103348 is about 432.8588096860.

The spelling of 81103348 in words is "eighty-one million, one hundred three thousand, three hundred forty-eight".