81141310 has 16 divisors (see below), whose sum is σ = 147421296. Its totient is φ = 32152768.

The previous prime is 81141299. The next prime is 81141311. The reversal of 81141310 is 1314118.

It is a super-2 number, since 2×81141310² = 13167824377032200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81141311) 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, 36847 + ... + 38986.

It is an arithmetic number, because the mean of its divisors is an integer number (9213831).

Almost surely, 2^81141310 is an apocalyptic number.

81141310 is a deficient number, since it is larger than the sum of its proper divisors (66279986).

81141310 is a wasteful number, since it uses less digits than its factorization.

81141310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75947.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 81141310 is about 9007.8471345822. The cubic root of 81141310 is about 432.9263351474.

Adding to 81141310 its reverse (1314118), we get a palindrome (82455428).

The spelling of 81141310 in words is "eighty-one million, one hundred forty-one thousand, three hundred ten".