81350302 has 8 divisors (see below), whose sum is σ = 133118712. Its totient is φ = 36977400.

The previous prime is 81350299. The next prime is 81350303. The reversal of 81350302 is 20305318.

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

It is a super-3 number, since 3×81350302³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 3697741 = 81350302 / (8 + 1 + 3 + 5 + 0 + 3 + 0 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81350303) 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, 1848849 + ... + 1848892.

It is an arithmetic number, because the mean of its divisors is an integer number (16639839).

Almost surely, 2^81350302 is an apocalyptic number.

81350302 is a deficient number, since it is larger than the sum of its proper divisors (51768410).

81350302 is a wasteful number, since it uses less digits than its factorization.

81350302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3697754.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 81350302 is about 9019.4402265329. The cubic root of 81350302 is about 433.2977060782.

It can be divided in two parts, 813 and 50302, that added together give a palindrome (51115).

The spelling of 81350302 in words is "eighty-one million, three hundred fifty thousand, three hundred two".