102810431 has 2 divisors, whose sum is σ = 102810432. Its totient is φ = 102810430.

The previous prime is 102810427. The next prime is 102810443. The reversal of 102810431 is 134018201.

It is a weak prime.

It is an emirp because it is prime and its reverse (134018201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102810431 - 2² = 102810427 is a prime.

It is a super-2 number, since 2×102810431² = 21139969444811522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102810401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51405215 + 51405216.

It is an arithmetic number, because the mean of its divisors is an integer number (51405216).

Almost surely, 2^102810431 is an apocalyptic number.

102810431 is a deficient number, since it is larger than the sum of its proper divisors (1).

102810431 is an equidigital number, since it uses as much as digits as its factorization.

102810431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 102810431 is about 10139.5478696044. The cubic root of 102810431 is about 468.4670608721.

Adding to 102810431 its reverse (134018201), we get a palindrome (236828632).

The spelling of 102810431 in words is "one hundred two million, eight hundred ten thousand, four hundred thirty-one".