102443113 has 2 divisors, whose sum is σ = 102443114. Its totient is φ = 102443112.

The previous prime is 102443111. The next prime is 102443123. The reversal of 102443113 is 311344201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91240704 + 11202409 = 9552^2 + 3347^2 .

It is a cyclic number.

It is not a de Polignac number, because 102443113 - 2¹ = 102443111 is a prime.

It is a super-2 number, since 2×102443113² = 20989182802261538, which contains 22 as substring.

Together with 102443111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (102443111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51221556 + 51221557.

It is an arithmetic number, because the mean of its divisors is an integer number (51221557).

Almost surely, 2^102443113 is an apocalyptic number.

It is an amenable number.

102443113 is a deficient number, since it is larger than the sum of its proper divisors (1).

102443113 is an equidigital number, since it uses as much as digits as its factorization.

102443113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 102443113 is about 10121.4185270643. The cubic root of 102443113 is about 467.9084868062.

Adding to 102443113 its reverse (311344201), we get a palindrome (413787314).

The spelling of 102443113 in words is "one hundred two million, four hundred forty-three thousand, one hundred thirteen".