102203977 has 2 divisors, whose sum is σ = 102203978. Its totient is φ = 102203976.

The previous prime is 102203971. The next prime is 102203999. The reversal of 102203977 is 779302201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95043001 + 7160976 = 9749^2 + 2676^2 .

It is a cyclic number.

It is not a de Polignac number, because 102203977 - 2¹⁹ = 101679689 is a prime.

It is not a weakly prime, because it can be changed into another prime (102203971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51101988 + 51101989.

It is an arithmetic number, because the mean of its divisors is an integer number (51101989).

Almost surely, 2^102203977 is an apocalyptic number.

It is an amenable number.

102203977 is a deficient number, since it is larger than the sum of its proper divisors (1).

102203977 is an equidigital number, since it uses as much as digits as its factorization.

102203977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 102203977 is about 10109.5982610586. The cubic root of 102203977 is about 467.5441189167.

The spelling of 102203977 in words is "one hundred two million, two hundred three thousand, nine hundred seventy-seven".