102921331 has 2 divisors, whose sum is σ = 102921332. Its totient is φ = 102921330.

The previous prime is 102921257. The next prime is 102921359. The reversal of 102921331 is 133129201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102921331 - 2¹¹ = 102919283 is a prime.

It is a super-2 number, since 2×102921331² = 21185600749623122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102921361) 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 as a sum of consecutive naturals, namely, 51460665 + 51460666.

It is an arithmetic number, because the mean of its divisors is an integer number (51460666).

Almost surely, 2^102921331 is an apocalyptic number.

102921331 is a deficient number, since it is larger than the sum of its proper divisors (1).

102921331 is an equidigital number, since it uses as much as digits as its factorization.

102921331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 102921331 is about 10145.0150813096. The cubic root of 102921331 is about 468.6354430341.

The spelling of 102921331 in words is "one hundred two million, nine hundred twenty-one thousand, three hundred thirty-one".