81350367 has 16 divisors (see below), whose sum is σ = 126846720. Its totient is φ = 45404352.

The previous prime is 81350359. The next prime is 81350429. The reversal of 81350367 is 76305318.

It is a happy number.

It is not a de Polignac number, because 81350367 - 2³ = 81350359 is a prime.

It is a super-2 number, since 2×81350367² = 13235764422069378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81350767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44142 + ... + 45947.

It is an arithmetic number, because the mean of its divisors is an integer number (7927920).

Almost surely, 2^81350367 is an apocalyptic number.

81350367 is a deficient number, since it is larger than the sum of its proper divisors (45496353).

81350367 is a wasteful number, since it uses less digits than its factorization.

81350367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90142.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 81350367 is about 9019.4438298600. The cubic root of 81350367 is about 433.2978214817.

The spelling of 81350367 in words is "eighty-one million, three hundred fifty thousand, three hundred sixty-seven".