102065731 has 2 divisors, whose sum is σ = 102065732. Its totient is φ = 102065730.

The previous prime is 102065729. The next prime is 102065737. The reversal of 102065731 is 137560201.

It is a weak prime.

It is an emirp because it is prime and its reverse (137560201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102065731 - 2¹ = 102065729 is a prime.

It is a super-2 number, since 2×102065731² = 20834826889128722, which contains 22 as substring.

Together with 102065729, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 102065696 and 102065705.

It is not a weakly prime, because it can be changed into another prime (102065737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51032865 + 51032866.

It is an arithmetic number, because the mean of its divisors is an integer number (51032866).

Almost surely, 2^102065731 is an apocalyptic number.

102065731 is a deficient number, since it is larger than the sum of its proper divisors (1).

102065731 is an equidigital number, since it uses as much as digits as its factorization.

102065731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 102065731 is about 10102.7585836741. The cubic root of 102065731 is about 467.3332162644. Note that the first 3 decimals are identical.

The spelling of 102065731 in words is "one hundred two million, sixty-five thousand, seven hundred thirty-one".