81035337 has 4 divisors (see below), whose sum is σ = 108047120. Its totient is φ = 54023556.

The previous prime is 81035299. The next prime is 81035377. The reversal of 81035337 is 73353018.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 81035337 - 2⁸ = 81035081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81035377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13505887 + ... + 13505892.

It is an arithmetic number, because the mean of its divisors is an integer number (27011780).

Almost surely, 2^81035337 is an apocalyptic number.

It is an amenable number.

81035337 is a deficient number, since it is larger than the sum of its proper divisors (27011783).

81035337 is a wasteful number, since it uses less digits than its factorization.

81035337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27011782.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 81035337 is about 9001.9629526009. The cubic root of 81035337 is about 432.7377814176.

The spelling of 81035337 in words is "eighty-one million, thirty-five thousand, three hundred thirty-seven".