81150303 has 8 divisors (see below), whose sum is σ = 116523568. Its totient is φ = 49938624.

The previous prime is 81150241. The next prime is 81150319. The reversal of 81150303 is 30305118.

It is a happy number.

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

It is not a de Polignac number, because 81150303 - 2¹³ = 81142111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 81150303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81150383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1040350 + ... + 1040427.

It is an arithmetic number, because the mean of its divisors is an integer number (14565446).

Almost surely, 2^81150303 is an apocalyptic number.

81150303 is a deficient number, since it is larger than the sum of its proper divisors (35373265).

81150303 is a wasteful number, since it uses less digits than its factorization.

81150303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080793.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 81150303 is about 9008.3462966296. The cubic root of 81150303 is about 432.9423284917.

The spelling of 81150303 in words is "eighty-one million, one hundred fifty thousand, three hundred three".