102973813 has 2 divisors, whose sum is σ = 102973814. Its totient is φ = 102973812.

The previous prime is 102973807. The next prime is 102973817. The reversal of 102973813 is 318379201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97180164 + 5793649 = 9858^2 + 2407^2 .

It is a cyclic number.

It is not a de Polignac number, because 102973813 - 2⁵ = 102973781 is a prime.

It is equal to p_5922871 and since 102973813 and 5922871 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102973817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51486906 + 51486907.

It is an arithmetic number, because the mean of its divisors is an integer number (51486907).

Almost surely, 2^102973813 is an apocalyptic number.

It is an amenable number.

102973813 is a deficient number, since it is larger than the sum of its proper divisors (1).

102973813 is an equidigital number, since it uses as much as digits as its factorization.

102973813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 102973813 is about 10147.6013421892. The cubic root of 102973813 is about 468.7150855654.

The spelling of 102973813 in words is "one hundred two million, nine hundred seventy-three thousand, eight hundred thirteen".