102321971 has 2 divisors, whose sum is σ = 102321972. Its totient is φ = 102321970.

The previous prime is 102321943. The next prime is 102321977. The reversal of 102321971 is 179123201.

It is a strong prime.

It is an emirp because it is prime and its reverse (179123201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102321971 - 2²⁶ = 35213107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102321971.

It is not a weakly prime, because it can be changed into another prime (102321977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51160985 + 51160986.

It is an arithmetic number, because the mean of its divisors is an integer number (51160986).

Almost surely, 2^102321971 is an apocalyptic number.

102321971 is a deficient number, since it is larger than the sum of its proper divisors (1).

102321971 is an equidigital number, since it uses as much as digits as its factorization.

102321971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 102321971 is about 10115.4323189867. The cubic root of 102321971 is about 467.7239755323.

The spelling of 102321971 in words is "one hundred two million, three hundred twenty-one thousand, nine hundred seventy-one".