102806331 has 8 divisors (see below), whose sum is σ = 137214480. Its totient is φ = 68467872.

The previous prime is 102806329. The next prime is 102806339. The reversal of 102806331 is 133608201.

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

It is not a de Polignac number, because 102806331 - 2¹ = 102806329 is a prime.

It is a super-2 number, since 2×102806331² = 21138283387363122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102806339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13876 + ... + 19953.

It is an arithmetic number, because the mean of its divisors is an integer number (17151810).

Almost surely, 2^102806331 is an apocalyptic number.

102806331 is a deficient number, since it is larger than the sum of its proper divisors (34408149).

102806331 is a wasteful number, since it uses less digits than its factorization.

102806331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34845.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 102806331 is about 10139.3456889486. The cubic root of 102806331 is about 468.4608334220.

The spelling of 102806331 in words is "one hundred two million, eight hundred six thousand, three hundred thirty-one".