81345334 has 8 divisors (see below), whose sum is σ = 139449168. Its totient is φ = 34862280.

The previous prime is 81345281. The next prime is 81345337. The reversal of 81345334 is 43354318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 81345296 and 81345305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81345337) 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, 2905177 + ... + 2905204.

It is an arithmetic number, because the mean of its divisors is an integer number (17431146).

Almost surely, 2^81345334 is an apocalyptic number.

81345334 is a deficient number, since it is larger than the sum of its proper divisors (58103834).

81345334 is a wasteful number, since it uses less digits than its factorization.

81345334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5810390.

The product of its digits is 17280, while the sum is 31.

The square root of 81345334 is about 9019.1648172101. The cubic root of 81345334 is about 433.2888855134.

The spelling of 81345334 in words is "eighty-one million, three hundred forty-five thousand, three hundred thirty-four".