102671321 has 2 divisors, whose sum is σ = 102671322. Its totient is φ = 102671320.

The previous prime is 102671311. The next prime is 102671389. The reversal of 102671321 is 123176201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75255625 + 27415696 = 8675^2 + 5236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102671321 is a prime.

It is a super-4 number, since 4×102671321⁴ (a number of 33 digits) contains 4444 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102671311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51335660 + 51335661.

It is an arithmetic number, because the mean of its divisors is an integer number (51335661).

Almost surely, 2^102671321 is an apocalyptic number.

It is an amenable number.

102671321 is a deficient number, since it is larger than the sum of its proper divisors (1).

102671321 is an equidigital number, since it uses as much as digits as its factorization.

102671321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 102671321 is about 10132.6857742654. The cubic root of 102671321 is about 468.2556754874.

The spelling of 102671321 in words is "one hundred two million, six hundred seventy-one thousand, three hundred twenty-one".